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Keto Funfetti Cake Recipe

What if we told you that you could enjoy a slice of birthday cake any day of the year, guilt-free, even on a keto diet? Yes, you heard that right! Introducing our Keto Funfetti Cake recipe—a delightful twist on the classic birthday cake, perfect for celebrating special occasions or simply satisfying your sweet tooth. With its moist layers, creamy frosting, and colorful sprinkles, this cake brings all the fun and flavor without the carb overload. Get ready to indulge in a slice of happiness, keto-style!

Keto Funfetti Cake

Keto Funfetti Cake

Celebrate in style with this keto-friendly twist on a classic birthday favorite!



  • 1 cup salted butter, softened (240g)
  • 1 tablespoon vanilla extract
  • 1 tsp almond extract (optional)
  • 1 cup + 5 tbsp powdered monkfruit/erythritol sweetener (250g)
  • 6 egg whites, room temperature
  • 2 cups almond flour (224g)
  • 1 cup coconut flour (112g)
  • 2 1/2 teaspoons baking powder
  • 1 tsp xanthan gum
  • 1/2 teaspoon salt
  • 3/4 cup 18% cream + 1 tsp vinegar (or 1/4 cup 1% milk and 1/2 cup 18% cream)
  • 1/3 cup keto rainbow sprinkles (53g)


  • 1 cup salted butter, room temperature (240g)
  • 1 cup cream cheese, room temperature (240g)
  • ~1 3/4 cups powdered monkfruit/erythritol sweetener (350-400g)
  • 1 tablespoon vanilla extract
  • 1/4 teaspoon salt
  • Sprinkles for decoration (optional)
  • Extra icing for decoration (optional)


  1. Preheat oven to 350°F and grease then flour two 9-inch cake pans (or two 8-inch pans).
  2. Mix 18% cream with 1 tsp vinegar and set aside.
  3. In a large bowl, beat together butter and powdered sweetener until light and fluffy.
  4. Add vanilla extract and egg whites, beat until well-incorporated.
  5. In a separate bowl, whisk together almond flour, coconut flour, baking powder, xanthan gum, and salt.
  6. Add dry ingredients and vinegar/cream mixture to the butter mixture, beat until incorporated (do not over-mix).
  7. Gently fold in sprinkles, then divide batter between cake pans and smooth tops.
  8. Bake for 40 minutes or until golden brown edges and centers are not wet to the touch.
  9. Cool cakes on wire racks for 15-20 minutes before removing from pans to cool further.
  10. While cakes cool, prepare frosting: Whip butter and cream cheese until light and fluffy. Add sweetener, salt, and vanilla extract, beat until smooth.
  11. Spread a thick layer of frosting over one cake, reserving some for the rest of the cake. Stack second cake on top.
  12. Ice top layer and sides of the whole cake until fully covered.
  13. Decorate with sprinkles or additional frosting as desired.
  14. Serve and enjoy your Keto Funfetti Birthday Cake! It’s also great chilled if you have time to refrigerate it overnight.

Breakdown of Ingredients and Average Carb Content

  • Almond Flour: About 2g of net carbs per 1/4 cup (28g) serving.
  • Coconut Flour: Roughly 3g of net carbs per 1/4 cup (28g) serving.
  • Monkfruit/Erythritol Sweetener: Zero net carbs.
  • Cream Cheese: About 2g of net carbs per ounce (28g) serving.
  • Butter: Negligible carb content.
  • Sprinkles: Net carbs depend on the type and brand used.

Indulge in Guilt-Free Festive Delight

With its fluffy layers, decadent frosting, and colorful sprinkles, this Keto Funfetti Cake is a celebration waiting to happen. Whether you’re blowing out candles on your birthday or simply treating yourself to a slice of joy, this keto-friendly dessert is guaranteed to delight your taste buds without derailing your low-carb lifestyle. So go ahead, bake up a storm, and revel in the sweetness of every bite—because every day is a celebration worth savoring!

Credit to sammysamgirl on Reddit

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