Sugar-Free Vanilla Cake with Cream Cheese Frosting

Sugar-Free Vanilla Cake with Cream Cheese Frosting

This two-layer vanilla cake has a pale, fine crumb and a smooth cream cheese frosting. Cake flour gives the layers their light texture, while a granulated monk-fruit/allulose blend sweetens the batter. Powdered sweetener keeps the frosting smooth, and sugar-free sprinkles add a narrow band of color along the outside edge.

Sweetener blends differ in weight, sweetness, and baking behavior. Choose one intended to replace sugar measure for measure, follow its package directions, and judge the cake by its set center and moist-crumb toothpick test rather than the timer alone.

Ingredients

For the cake

• 2 1/4 cups cake flour (270g), measured without packing
• 1 1/2 cups granulated monk-fruit/allulose sweetener blend (about 300g), subject to the product’s measure-for-measure directions
• 1/2 cup unsalted butter, softened (115g)
• 1/4 cup neutral oil (about 55g)
• 3 large eggs, at room temperature
• 3/4 cup buttermilk, at room temperature (180g)
• 1/2 cup sour cream, at room temperature (120g)
• 2 teaspoons baking powder
• 1/2 teaspoon fine salt
• 2 teaspoons vanilla extract

For the frosting and finish

• 8 ounces full-fat cream cheese, softened but cool (225g)
• 1/2 cup unsalted butter, softened but cool (115g)
• 2 cups powdered monk-fruit/allulose sweetener (about 240g), or as directed by the product and adjusted to taste
• 1 teaspoon vanilla extract
• 1–2 tablespoons heavy cream, added gradually only as needed
• 2–3 tablespoons sugar-free multicolor sprinkles (about 25g); check the package label

How to Bake and Frost the Cake

1. Prepare the oven and pans: Heat the oven to 325°F (165°C) with a rack in the center. Grease two matching 8-inch round cake pans and line their bottoms with parchment.
2. Mix the dry ingredients: Whisk together the cake flour, baking powder, and salt.
3. Cream the butter and sweetener: Beat the softened butter, oil, and granulated sweetener until evenly combined and lighter in texture, about 6–8 minutes. Scrape the bowl. Beat in the eggs one at a time, then mix in 2 teaspoons vanilla. The mixture should look cohesive rather than oily or separated.
4. Finish the batter: Stir together the buttermilk and sour cream. Add the flour mixture to the creamed mixture in portions, alternating with the buttermilk mixture and beginning and ending with flour. Mix just until no dry flour remains. The batter should be thick but spreadable.
5. Bake: Divide the batter evenly between the pans and bake uncovered on the center rack. Begin checking at about 30 minutes; the expected bake window is 35–40 minutes. The centers should be set and spring back lightly, and a toothpick inserted near the center should come out with a few moist crumbs, not wet batter. Avoid opening the oven before the cakes have begun to set.
6. Cool completely: Let the layers rest briefly in their pans, then turn them onto wire racks and remove the parchment. Do not frost them while they are warm.
7. Make the frosting: Beat the cream cheese and butter until smooth. Gradually beat in the powdered sweetener and 1 teaspoon vanilla. Add heavy cream a teaspoon at a time only if the frosting needs loosening. If it feels soft, chill it for 20–30 minutes, until it spreads easily but holds soft peaks.
8. Stack and decorate: Spread frosting over one cooled layer, set the second layer on top, and frost the top and outside. Gently press the sugar-free sprinkles along the freshly frosted outer edge so they adhere.
9. Slice: If the frosting is soft, chill the assembled cake for 15–30 minutes. Cut into generous wedges, wiping the knife between cuts.

Why the Flour and Sweetener Matter

Cake flour helps produce the fine, pale crumb in this cake. Almond flour and coconut flour need a different batter and bake time; neither is a cup-for-cup substitute here.

Use a granulated measure-for-measure blend in the cake and powdered sweetener in the frosting. Granulated sweetener can leave frosting gritty, and changing blends may affect the cake’s sweetness, height, and bake time. For a conventional-sugar version, use a separate recipe such as this classic vanilla birthday cake rather than substituting sugar into this batter.

Keeping the Frosting Firm Enough to Spread

Start with cream cheese and butter that are softened but still cool. Add cream only until the frosting spreads smoothly; too much can make it run. Chill soft frosting before assembly, and make sure the cake layers are cool through the center so the frosting stays in place.

Serving and Storage

Serve generous wedges with the pale crumb and sprinkle-edged frosting visible. Fresh berries are optional alongside the cake.

Keep the frosted cake covered in the refrigerator because it contains cream cheese. Let a slice stand briefly before serving if you prefer softer frosting. The cake layers can be baked ahead; cool them completely and keep them covered until frosting. No reheating is needed.

Nutrition

Approximate nutrition per slice, based on 11 slices: 440 calories, 7g protein, 34g fat, and 23g carbohydrates. Approximate nutrition per 100g: 285 calories, 4g protein, 22g fat, and 15g carbohydrates. These estimates exclude allulose from the reported carbohydrate figures and will vary with ingredient brands. Dairy contains naturally occurring sugars, so check product labels if you need to track sugar intake.