Keto Walnut Cake Recipe with Sugar-Free Frosting

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This Keto Walnut Cake is the ideal sweet treat for a low-carb dessert or enjoy a slice for afternoon tea.

Keto Walnut Cake with a slice being removed from the side.
Keto Walnut Cake

The cake is fluffy and light with tasty sugar-free vanilla buttercream frosting.

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This Keto Walnut Cake recipe makes 12 serves. 1 serving is 1 slice and has 3g net carbs.

Keto Walnut Cake Ingredients

Keto Walnut Cake Ingredients in a glass mixing bowl.
Keto Walnut Cake Ingredients
  • Walnut Cake Ingredients:
  • 1 ½ cups of Almond Flour
  • 2 tablespoons of Coconut Flour
  • 2 teaspoons of Baking Powder
  • 1 cup Unsalted Butter, softened
  • ½ cup of Erythritol, granulated
  • 4 large Eggs
  • ⅓ cup of Unsweetened Almond Milk
  • 2 teaspoons of Vanilla Extract
  • 1 cup Walnuts, finely chopped
  • Frosting Ingredients:
  • ¾ cup of Unsalted Butter, softened
  • ½ cup of Erythritol, powdered
  • 1 teaspoon of Vanilla Extract
  • 1-2 tablespoons of Heavy Cream, optional
  • 8 Walnuts, for decorating

How to Make Keto Walnut Cake

Keto Walnut Cake on a glass cake stand with a slice removed.
How to make Keto Walnut Cake
  1. Preheat your oven to 160C/320F. Grease 2 x 8in round cake pans and line the base with parchment paper. Set aside.
  2. Sift the almond flour, coconut flour and baking powder into a mixing bowl. Set aside.
  3. Place the butter and erythritol into a large mixing bowl and beat with a hand mixer for 5 minutes, or until the butter is pale and fluffy.
  4. In a third bowl, add the eggs, milk and vanilla. Whisk together until combined.
  5. Pour half the flour mixture and half the egg mixture into the creamed butter and fold together with a spatula until just combined.
  6. Add the remaining flour, egg mixture, and walnuts, and gently fold, taking care not to over mix.
  7. Split the cake batter evenly between the 2 prepared cake pans and smooth out.
  8. Bake for 35-45 minutes, until the cakes no longer jiggle, and an inserted skewer comes out clean.
  9. Cool in the pans for 10 minutes before turning out onto cooling racks. Cool the cakes upside down.
  10. To make the frosting; place the butter into a clean mixing bowl and whip on medium high speed for 2 minutes.
  11. Add the powdered sweetener a spoonful at a time, once it is all combined add the vanilla.
  12. Continue whipping until the frosting is pale and fluffy. The cream can be added to make the frosting softer.
  13. Place one of the cooled walnut cakes onto a cake stand or serving platter. Spoon on one-third of the frosting and smooth over with a pallet knife.
  14. Top with the second cake and spread half the remaining frosting over the top and down the sides of the cake, until it is completely covered.
  15. Press the walnuts into the top to decorate.
  16. Cut into slices and serve.
Keto Walnut Cake

Keto Walnut Cake with Sugar-Free Vanilla Frosting

This Keto Walnut Cake is the ideal sweet treat for dessert or enjoy a slice for afternoon tea. It’s fluffy and light with tasty sugar-free vanilla buttercream frosting.
4.75 from 28 votes
Print Pin
Course: Dessert, Desserts
Cuisine: American
Cook Time: 45 mins
Total Time: 45 mins
Servings: 12 servings
Calories: 418kcal
Author: Gerri

Ingredients

Walnut Cake Ingredients:

Frosting Ingredients:

  • ¾ cup Unsalted Butter softened
  • ½ cup Erythritol powdered
  • 1 teaspoon Vanilla Extract
  • 1-2 tablespoons Heavy Cream optional
  • 8 Walnuts for decorating

Instructions

  • Preheat your oven to 160C/320F. Grease 2 x 8in round cake pans and line the base with parchment paper. Set aside.
  • Sift the almond flour, coconut flour and baking powder into a mixing bowl. Set aside.
  • Place the butter and erythritol into a large mixing bowl and beat with a hand mixer for 5 minutes, or until the butter is pale and fluffy.
  • In a third bowl, add the eggs, milk and vanilla. Whisk together until combined.
  • Pour half the flour mixture and half the egg mixture into the creamed butter and fold together with a spatula until just combined.
  • Add the remaining flour, egg mixture, and walnuts, and gently fold, taking care not to over mix.
  • Split the cake batter evenly between the 2 prepared cake pans and smooth out.
  • Bake for 35-45 minutes, until the cakes no longer jiggle, and an inserted skewer comes out clean.
  • Cool in the pans for 10 minutes before turning out onto cooling racks. Cool the cakes upside down.
  • To make the frosting; place the butter into a clean mixing bowl and whip on medium high speed for 2 minutes.
  • Add the powdered sweetener a spoonful at a time, once it is all combined add the vanilla.
  • Continue whipping until the frosting is pale and fluffy. The cream can be added to make the frosting softer.
  • Place one of the cooled walnut cakes onto a cake stand or serving platter. Spoon on one-third of the frosting and smooth over with a pallet knife.
  • Top with the second cake and spread half the remaining frosting over the top and down the sides of the cake, until it is completely covered.
  • Press the walnuts into the top to decorate.
  • Cut into slices and serve.

Video

Sugar Free Walnut Cake Recipe – Easy To Make, Healthy & Delicious (Low Carb & Keto)

Nutrition

Serving: 150g | Calories: 418kcal | Carbohydrates: 6g | Protein: 7g | Fat: 42g | Saturated Fat: 19g | Cholesterol: 135mg | Sodium: 40mg | Potassium: 141mg | Fiber: 3g | Sugar: 1g | Vitamin A: 936IU | Vitamin C: 1mg | Calcium: 93mg | Iron: 1mg
Keto Walnut Cake on a glass cake stand.
Keto Walnut Cake Recipe

How Store Keto Walnut Cake

Store leftover Keto Walnut Cake on the counter for 2 days, in the fridge for up to 1 week, or freeze for up to 3 months.

Just be sure to defrost the frosted cake in the fridge, as any heat will completely melt the frosting.

Looking for more delicious Keto Cake recipes? Try our;

To make a larger batch of this Keto Walnut Cake recipe adjust the servings above.

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