Sugar-Free Carrot Cake with Erythritol Cream Cheese Frosting

Name: Sugar-Free Carrot Cake with Erythritol Cream Cheese Frosting
Prep time: 35 min
Cook time: 36 min
Total time: 2 h 30 min
Yield: one 9-inch two-layer cake
Cuisine: American
Ingredients: 240 g all-purpose flour (about 2 cups, spooned and leveled); 2 tsp baking powder; 1 tsp baking soda; 2 tsp ground cinnamon; 0.5 tsp ground nutmeg; 0.25 tsp ground ginger; 0.25 tsp ground allspice; 0.5 tsp fine sea salt; 200 g granulated erythritol (about 1 cup), such as Swerve Granular or Anthony's; 80 g allulose (about 6 tbsp), for moisture and browning; 4 large eggs, at room temperature; 180 ml neutral oil such as avocado or light olive oil (about 3/4 cup); 120 ml full-fat sour cream, at room temperature (about 1/2 cup); 2 tsp pure vanilla extract; 300 g finely grated carrots, loosely packed (about 3 medium carrots, roughly 2 1/2 cups); 80 g chopped walnuts or pecans, optional (about 3/4 cup); For the Erythritol Cream Cheese Frosting:; 450 g full-fat block cream cheese, softened to room temperature (two 8-oz blocks); 115 g unsalted butter, softened to room temperature (1/2 cup, 1 stick); 240 g powdered erythritol, sifted (about 2 cups), such as Swerve Confectioners; 2 tsp pure vanilla extract; Pinch of fine sea salt; 1 to 2 tbsp heavy cream, as needed for consistency

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There is something deeply comforting about carrot cake. The way the kitchen fills with cinnamon and nutmeg as it bakes, the tender crumb studded with shreds of orange carrot, the cool tang of cream cheese frosting meeting a warm slice straight from the pan. This version carries every bit of that cozy magic, and yet it contains no refined sugar at all. Whether you are managing blood sugar, eating low-carb, or simply curious about baking with alternative sweeteners, this cake will absolutely delight you.

What makes this recipe stand out is the careful combination of granulated erythritol and a small measure of allulose in the batter. Erythritol gives you the bulk and clean sweetness of sugar, but allulose is the secret weapon here: it browns beautifully in the oven and contributes that soft, moist crumb we associate with a great carrot cake. The cream cheese frosting uses powdered erythritol, which blends silky-smooth when beaten long enough, eliminating the gritty texture that sometimes plagues sugar-free frostings. The result is a cake that genuinely stands shoulder-to-shoulder with its full-sugar counterpart.

This recipe sits comfortably in the medium difficulty range. You do not need a stand mixer, though it helps. It is perfect for home bakers who want a reliable, crowd-pleasing layer cake for birthdays, holidays, or a weekend treat that the whole family can enjoy, regardless of dietary needs. If you can grate carrots and fold a batter without overmixing, you can make this cake beautifully.

Prep: 35 minutesTotal: 2 hours 30 minutes (includes cooling and frosting)Yield: one 9-inch two-layer cakeDifficulty: ★★☆ IntermediateOccasion: Special Occasion

✓ Vegetarian✓ Sugar-Free

Servings:

12

servings

Ingredients

240 gall-purpose flour (about 2 cups, spooned and leveled)
2 tspbaking powder
1 tspbaking soda
2 tspground cinnamon
0.5 tspground nutmeg
0.25 tspground ginger
0.25 tspground allspice
0.5 tspfine sea salt
200 ggranulated erythritol (about 1 cup), such as Swerve Granular or Anthony’s
80 gallulose (about 6 tbsp), for moisture and browning
4 largeeggs, at room temperature
180 mlneutral oil such as avocado or light olive oil (about 3/4 cup)
120 mlfull-fat sour cream, at room temperature (about 1/2 cup)
2 tsppure vanilla extract
300 gfinely grated carrots, loosely packed (about 3 medium carrots, roughly 2 1/2 cups)
80 gchopped walnuts or pecans, optional (about 3/4 cup)
—For the Erythritol Cream Cheese Frosting:
450 gfull-fat block cream cheese, softened to room temperature (two 8-oz blocks)
115 gunsalted butter, softened to room temperature (1/2 cup, 1 stick)
240 gpowdered erythritol, sifted (about 2 cups), such as Swerve Confectioners
2 tsppure vanilla extract
—Pinch of fine sea salt
1 to 2 tbspheavy cream, as needed for consistency

Ingredient Substitutions

allulose

Replace with an equal weight of additional granulated erythritol. The cake will still be delicious but very slightly less moist, and the crust may not brown as deeply.
Xylitol works in equal measure for sweetness and moisture, though it is toxic to dogs, so take care if pets are in the household.

granulated erythritol

A 1:1 granulated monk fruit erythritol blend (like Lakanto) works perfectly in the same quantity.
Coconut sugar can be substituted in equal weight for a less strict sugar-free result. It has a lower glycemic index than white sugar but will affect the glycemic load.

powdered erythritol (frosting)

Powdered monk fruit erythritol blend (like Lakanto Powdered) works 1:1 and produces the same smooth result.
You can make your own by blending granulated erythritol in a high-powered blender for 60 seconds until it becomes a fine powder. Sift well before using.

sour cream

Full-fat plain Greek yogurt works in equal measure and keeps the batter just as moist and tender.
Full-fat coconut cream (the thick part from a chilled can) works for a dairy-free version, though it adds a mild coconut flavor.

eggs

For a vegan version, use 4 flax eggs: combine 1 tbsp ground flaxseed with 3 tbsp water per egg and let sit 5 minutes before using. The cake will be slightly denser.

all-purpose flour

For a gluten-free version, use a 1:1 gluten-free baking flour blend (such as Bob’s Red Mill 1-to-1) in equal weight. Avoid almond flour here as it requires a completely different ratio and method.
White whole wheat flour can replace up to half the all-purpose flour for a slightly nuttier flavor and more fiber.

Instructions

🔧 Equipment

🟫two 9-inch round cake pans (for layer cake method)

🟫9×13-inch baking pan (for sheet cake method)

💨6-inch round cake pan (for air fryer method)

💨air fryer with at least 6-inch basket clearance

⚡stand mixer or hand mixer

🥣two large mixing bowls

🍴rubber spatula

🌀balloon whisk

⚙️box grater or food processor with grating disc

⚖️kitchen scale

📄parchment paper

🔵wire cooling rack

🍴offset spatula

🔵fine-mesh sieve or sifter

🧁toothpick or cake tester

Prep: 35 minutes
Bake: 32 to 36 minutes at 350°F (175°C)
Total: 2 hours 30 minutes

Preheat your oven to 350°F (175°C). Grease two 9-inch round cake pans generously with butter or cooking spray, line the bottoms with parchment paper circles, then grease the parchment too. Set aside.
In a large bowl, whisk together the flour, baking powder, baking soda, cinnamon, nutmeg, ginger, allspice, and salt until evenly combined. Set aside.
In a separate large bowl, whisk together the granulated erythritol, allulose, and eggs vigorously for about 90 seconds until slightly pale and well combined. Whisk in the oil, sour cream, and vanilla extract until smooth and emulsified.
Pour the wet ingredients into the dry ingredients and fold gently with a rubber spatula until just combined and no dry streaks remain. Do not overmix. Fold in the grated carrots and nuts if using. The batter will be thick.
Divide the batter evenly between the two prepared pans. Weigh them if you have a kitchen scale for perfectly even layers. Spread the batter to the edges with an offset spatula.
Bake for 32 to 36 minutes, rotating the pans once at the 18-minute mark, until the tops are deep golden brown, the edges pull away slightly from the pan, and a toothpick inserted in the center comes out with just a few moist crumbs (not wet batter). Note: erythritol can make the toothpick feel slightly stickier than sugar-based cakes, so look for no wet batter and a set center that springs back gently.
Cool in the pans on a wire rack for 20 minutes, then turn out, peel off the parchment, and cool completely on the rack, at least 1 hour. The layers must be completely cool before frosting or the frosting will melt.
Make the frosting: Beat the softened cream cheese and butter together with a hand or stand mixer on medium-high speed for 3 full minutes until completely smooth, light, and fluffy. Scrape the bowl. With the mixer on low, gradually add the sifted powdered erythritol, then increase to medium and beat for another 2 to 3 minutes. The long beating time is essential for dissolving the erythritol crystals and achieving a smooth texture. Add vanilla and salt, and 1 tbsp of cream if needed for a spreadable consistency. Beat 1 minute more.
Place one cooled cake layer on a serving plate or cake board. Spread about one-third of the frosting over the top. Place the second layer on top, gently pressing to secure. Spread the remaining frosting over the top and sides of the cake. Refrigerate for at least 30 minutes before slicing for clean, neat slices.

Prep: 35 minutes
Bake: 38 to 44 minutes at 325°F (165°C)
Total: 2 hours

A single-layer sheet cake is the easier, more forgiving option. Lower temperature and longer bake time ensure the center cooks through without over-browning the edges. Perfect for casual serving straight from the pan.

Preheat your oven to 325°F (165°C). Grease a 9×13-inch baking pan and line with parchment paper, leaving an overhang on the long sides to act as handles for easy lifting. Grease the parchment.
Prepare the batter exactly as described in the oven method steps 2 through 4: whisk dry ingredients in one bowl, whisk wet ingredients in another, then fold together with the carrots and optional nuts.
Pour all of the batter into the prepared pan and spread evenly with an offset spatula, making sure the corners are filled.
Bake at 325°F for 38 to 44 minutes, rotating the pan once at the 22-minute mark. The cake is done when it is deep golden on top, pulling away from the edges, and a toothpick inserted in the very center comes out with just a few moist crumbs. Because this is a thicker single layer, check at 38 minutes and add time in 3-minute increments as needed.
Cool completely in the pan on a wire rack, about 1 to 1.5 hours. You can frost it directly in the pan for a casual presentation, or lift out using the parchment handles, peel off the parchment, and transfer to a board for a neater finish.
Prepare the full frosting recipe and spread it generously over the cooled cake. For a beautiful finish, use the back of a spoon to create swoops and peaks. Refrigerate 20 minutes before serving. Slice directly in the pan or on the board.

Prep: 35 minutes
Bake: 28 to 32 minutes at 320°F (160°C)
Total: 1 hour 45 minutes

This method makes a smaller 6-inch single-layer cake, ideal for two to four servings. Air fryers vary widely, so check your cake at 25 minutes. The crust develops a lovely deep color while the inside stays moist.

Grease a 6-inch round cake pan (make sure it fits inside your air fryer basket with at least 1 inch of clearance around the sides) and line the bottom with parchment. Grease the parchment.
Prepare a half batch of the cake batter: halve all batter ingredients. Whisk the dry ingredients together, whisk the wet ingredients together, then fold to combine with the carrots. Pour into the prepared 6-inch pan.
Preheat your air fryer to 320°F (160°C) for 3 minutes. Place the cake pan in the basket. Bake at 320°F for 28 to 32 minutes. Check at 25 minutes: if the top is browning too quickly, lay a small piece of foil loosely on top for the remaining time. The cake is done when a toothpick inserted in the center comes out with just a few moist crumbs.
Remove the pan carefully using oven mitts (air fryer baskets get very hot). Cool in the pan for 15 minutes, then turn out onto a wire rack and cool completely, about 45 to 60 minutes.
Prepare a half batch of the cream cheese frosting. Beat the cream cheese and butter well, beat in the sifted powdered erythritol, and add vanilla. Spread or pipe generously over the cooled cake. Refrigerate 20 minutes before slicing.

Nutrition Per Serving

Per 1 serving (makes one 9-inch two-layer cake)

368Calories

18gCarbs

3gSugar

31gFat

6gProtein

Glycemic Load4Low

Low0–10

Medium11–19

High20+

Erythritol has a glycemic index of 0 and is not metabolized by the body, contributing zero net carbohydrates. Allulose is also minimally metabolized and has a glycemic index near 0. The small glycemic load per serving comes from the all-purpose flour and carrots, which contain modest amounts of natural starch and sugar.

Sweetener: erythritol and allulose

Why This Recipe Works

Baking with erythritol requires a small but meaningful understanding of how it differs from sugar. Erythritol is about 70% as sweet as sucrose and does not caramelize or brown the same way because it lacks the reactive reducing end that participates in Maillard browning. This is why this recipe introduces allulose, which browns and caramelizes beautifully, contributing not only color but also the soft, moist, almost fudgy crumb texture that sugar normally provides. Erythritol also tends to recrystallize as it cools, which is why the sour cream is critical here: its fat and protein content surrounds the erythritol crystals and inhibits recrystallization, keeping the crumb tender rather than grainy. The same principle applies to the frosting: extended beating and the fat in the cream cheese and butter coat the erythritol particles, creating a smooth, creamy result.

The combination of baking powder and baking soda provides a double lift. Baking soda needs an acid to activate, and it gets that here from the sour cream. Baking powder provides additional leavening in the oven heat. Carrot cake is naturally dense due to the high moisture content of the carrots, so this dual leavening system is important for achieving a properly risen, tender crumb rather than a heavy, compact one. Grating the carrots finely, rather than coarsely, distributes the moisture more evenly throughout the batter and allows them to almost melt into the crumb during baking, a key textural detail.

If your frosting feels gritty, it simply needs more beating. Unlike powdered sugar, which is already dissolved into fine particles bonded with cornstarch, powdered erythritol requires friction and fat to achieve full smoothness. Three minutes of beating the cream cheese and butter before adding the sweetener is not optional: it builds the creamy base that the erythritol needs to dissolve into. If grittiness persists, place the frosted cake in the refrigerator for 30 minutes. The cool temperature and resting time allow the erythritol crystals to soften and absorb into the frosting, and you will find the texture improves noticeably.

Baker’s Tips

Bring all refrigerated ingredients, including eggs, sour cream, cream cheese, and butter, to room temperature before starting. Cold cream cheese in frosting leads to lumps that are very difficult to beat out.
Squeeze your grated carrots gently in a clean kitchen towel to remove a small amount of excess moisture if they seem very wet. You want moist carrots, not waterlogged ones.
Sift the powdered erythritol before adding it to the frosting. It clumps in the bag and unsifted clumps can remain gritty even after beating.
Weigh your flour rather than scooping it from the bag. Scooping compacts the flour and can add 20 to 30 percent more than intended, resulting in a dry, dense cake.
Do not skip the parchment paper lining. Cakes made with erythritol can stick more than sugar-based cakes because erythritol does not dissolve as readily during baking.
Allow the cake layers to cool completely before frosting. Cream cheese frosting melts and slides easily on a warm cake. When in doubt, refrigerate the layers for 20 minutes before assembling.
For the cleanest slices, use a sharp knife wiped clean with a hot damp cloth between each cut.

Variations

Pineapple Carrot Cake: Fold in 80g (about 1/3 cup) of well-drained crushed pineapple with the carrots for extra moisture and tropical sweetness, no additional sweetener needed.
Spiced Raisin Version: Add 60g (about 1/3 cup) of raisins to the batter. While raisins contain natural sugar, the small amount per serving has minimal impact on overall glycemic load.
Cupcakes: Divide the full batter among 18 to 20 lined standard muffin cups (fill two-thirds full) and bake at 350°F for 20 to 24 minutes. Cool completely before piping on frosting.
Coconut Carrot Cake: Fold in 40g (about 1/2 cup) of unsweetened shredded coconut with the carrots and substitute coconut oil for the neutral oil for a tropical twist.
Frosting shortcut: For an even simpler frosting, beat one 8-oz block of cream cheese with 120g powdered erythritol and 1 tsp vanilla for a thinner glaze-style topping.

Troubleshooting & FAQ

My frosting is gritty. How do I fix it?

This is the most common issue with erythritol-based frostings. First, make sure you used powdered erythritol (not granulated) and that you sifted it. Second, beat the frosting for longer: at least 2 to 3 minutes after adding the sweetener. Finally, refrigerate the frosted cake for 30 to 60 minutes. As the frosting chills, the erythritol crystals soften and the texture smooths out significantly.

Why did my cake turn out dense and gummy in the center?

This is almost always underbaking. Erythritol retains more moisture than sugar during baking, so these cakes can look done on the outside while still being underdone in the center. Always test with a toothpick inserted into the very center of the cake, and look for moist crumbs rather than wet batter. If the top is browning too fast before the center sets, tent loosely with foil and continue baking.

My cake has a cooling, almost minty aftertaste. Is that normal?

Yes, this is the well-known cooling sensation of erythritol, caused by its endothermic dissolving on the tongue. It is most noticeable when erythritol is eaten cold or in high concentrations. To minimize it in this recipe, make sure you are using the full amount of allulose, which dilutes the erythritol effect. Serving the cake at room temperature rather than straight from the refrigerator also noticeably reduces the cooling sensation.

The top of my cake is very dark but the inside is not done yet.

Your oven likely runs hot, or the top rack is too close to the heating element. Move your cake to the center rack and tent it loosely with aluminum foil as soon as the top reaches your desired color. Reduce the oven temperature by 15°F (about 10°C) for the remainder of the bake time. An oven thermometer is one of the most useful tools a home baker can have.

My cake layers are sticking to the pan. How do I get them out cleanly?

Run a thin offset spatula or butter knife around the entire inner edge of the pan to loosen the sides. Place a wire rack over the top of the pan, then flip the whole thing over firmly in one swift motion. If the layer does not release, gently tap the bottom of the pan. If it still sticks, allow it to sit inverted for a minute: gravity will help. Always use parchment paper in future bakes as prevention, and grease both the pan and the parchment.

Storage & Make-Ahead

Storage: Store the frosted cake covered in the refrigerator for up to 6 days. Cream cheese frosting must always be refrigerated. Bring slices to room temperature for 15 to 20 minutes before serving for the best texture and flavor. The unfrosted cake layers can be wrapped tightly in plastic wrap and frozen for up to 3 months. Thaw overnight in the refrigerator before frosting.
Make-Ahead: The cake layers can be baked up to 2 days ahead, wrapped tightly in plastic wrap, and stored at room temperature or in the refrigerator. The cream cheese frosting can be made up to 3 days ahead and stored in an airtight container in the refrigerator. Re-beat the frosting for 1 to 2 minutes before using to restore its fluffy texture. The fully assembled and frosted cake can be made 1 day ahead and refrigerated.