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Home » Desserts » Keto Birthday Cake

Keto Birthday Cake

A photo of Vered DeLeeuw.
by Vered DeLeeuwUpdated May 16, 2025
12 Comments
5 from 10 votes

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This keto birthday cake is made with almond flour. The fluffy yellow cake is frosted with a rich chocolate frosting. A keto version of a beloved childhood cake, it's incredibly close to the real thing!

A slice of keto birthday cake is served with a fork.

I made this keto birthday cake for my husband after he told me about one of his fondest childhood memories, a yellow layer cake with chocolate frosting his grandma used to make. It's a sweet victory for low-carb baking that you can use almond flour and a sugar-free sweetener to produce a cake that is so fluffy, flavorful, and festive!

Ingredients

See the recipe card for exact measurements. Here are my comments on the ingredients.

For the Cake

  • Whole milk: You can substitute heavy cream for the milk.
  • Sweetener: I use stevia.
  • Almond flour: I use superfine almond flour. I don't recommend using a coarse almond meal.
The ingredients needed to make a keto birthday cake.

For the Frosting

  • Butter: Please use unsalted butter.
  • Heavy cream: The frosting should be made with cream. Milk won't work here.
  • Cocoa powder: I recommend using Dutch-processed cocoa powder (cocoa treated with alkali). It's milder and less acidic than natural cacao powder.
The ingredients needed to make a keto chocolate frosting.

Variations

  1. When I make this cake for my husband, I use rum extract instead of vanilla extract because his grandma used to add rum to her cake. Another good option is almond extract.
  2. If you'd like to try lighter frosting, this keto chocolate whipped cream is amazing.
  3. You can use a granulated sweetener in the cake batter, adding 1-2 tablespoons of milk or cream if the batter seems too thick. For the frosting, you can use one cup of powdered sweetener instead of the stevia and increase the heavy cream until you achieve a good frosting consistency. Start by adding ¼ cup of heavy cream. The photo below shows what the frosting should look like.
Mixing the frosting in a bowl.

Instructions

The detailed instructions and step-by-step photos are included in the recipe card. Here's a quick overview.

Mix the cake ingredients by hand in one bowl (easy!). Divide the mixture evenly between two nonstick cake pans and bake it into two cakes. These will be the layers of your birthday cake.

The cakes were inverted onto a cooling rack.

Allow the cakes to cool completely. Quickly whip up the chocolate frosting. When the cake layers are cool, assemble the cake: Place one cake on a platter and frost the top. Place the second cake on top of the first one and frost its top as well. Then, frost the sides.

Frosting the second layer of the cake.

Slice and serve! Look at the cake's beautiful crumb - you can see in the photo how fluffy and tender it is.

A fork is holding a piece of cake, showing off its tender crumb.

Recipe Tips

  1. It's important to use nonstick cake pans and grease them well. Butter works better than nonstick spray. I replace my baking pans once a year, so they are always brand new and truly nonstick. These are the pans I use. If your pans are older, line their bottoms with a circle of parchment paper after greasing them and grease the parchment, too.
  2. Note that the tops of the cakes won't brown, even though they should be fully baked after about 15 minutes. This is fine, and the lack of browning is not an issue because we will frost the cake.
  3. Make sure the cake layers are completely cool before adding the frosting to prevent it from melting. You can speed up the process by placing the cakes, still on the cooling rack, in the fridge.
  4. Don't worry about the frosting too much. Homemade cakes are not supposed to be perfect. The Internet is filled with tutorials on how to frost a cake, including shaving off the slight dome on top of the layers, brushing away crumbs, and applying a thin layer of frosting (a crumb coat) before frosting your cake. I don't do any of these. The only specialty tool I use is an offset spatula, simply because it makes the task of spreading the frosting easier.
  5. Storage: You can store this cake in the fridge, covered, for up to five days. I don't own a cake dome, so I cover the cake plate with an inverted salad bowl. Remember to take the cake out of the fridge at least an hour, and preferably two hours, before you plan on enjoying it. Cake frosting is best at room temperature.

Recipe Card

Keto birthday cake is served on a white plate with a fork.
5 from 10 votes
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Almond Flour Keto Birthday Cake

This delightful keto birthday cake is made with almond flour. The fluffy yellow cake is frosted with a rich chocolate frosting.
Prep Time30 minutes mins
Cook Time15 minutes mins
Rest time40 minutes mins
Total Time1 hour hr 25 minutes mins
Course: Dessert
Cuisine: American
Diet: Gluten Free
Servings: 12 slices
Calories: 391kcal
Author: Vered DeLeeuw
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Video

Ingredients

Cake:

  • 6 large eggs
  • ¼ cup whole milk
  • 6 tablespoons unsalted butter - melted; 3 ounces
  • 2 teaspoons vanilla extract
  • 2 teaspoons stevia glycerite - heaping; equals about ¾ cup of sugar
  • 2 ¼ cups almond flour - blanched,superfine; 9 ounces
  • ¼ teaspoon salt
  • 2 teaspoons baking powder - fresh; gluten-free if needed

Chocolate Frosting:

  • 1 cup unsalted butter - softened; 8 ounces
  • ½ cup heavy cream
  • ½ cup unsweetened cocoa powder - Dutch-processed; 1.5 ounces
  • 1 teaspoon vanilla extract
  • 1 tablespoon stevia glycerite - equals 1 cup of powdered sugar

Instructions

Bake the cake layers:

  • Preheat the oven to 325°F. Generously butter two round 8-inch nonstick cake pans.
    A buttered cake pan.
  • In a large bowl, whisk together the eggs, milk, melted butter, vanilla, and stevia.
    Whisking the liquid ingredients in a bowl.
  • Add the almond flour, mixing it in with a rubber spatula and then whisking until the batter is smooth. Whisk in the kosher salt and baking powder.
    Mixing the dry ingredients into the batter.
  • Divide the batter evenly between the two pans. To ensure the cake layers are the same size, it’s best to use your kitchen scales and weigh the batter as you pour it into the pans. I weighed each cake at 360 grams.
    The cake batter was added to the pan.
  • Bake the cakes in the middle of the oven until it is slightly puffed and set, and a toothpick inserted in their center comes out clean, 15-18 minutes. The tops of the cakes won't brown even when they are fully baked.
    The two cake layers are ready in the pans.
  • Remove the cakes from the oven and place them on a wire rack. Let them cool for 10 minutes in the pans, then invert them directly onto the wire rack. Let them cool completely for at least 30 more minutes.
    The cakes were inverted onto a cooling rack.

While the cakes are cooling, prepare the frosting:

  • Place the softened unsalted butter, heavy cream, cocoa powder, vanilla, and stevia in a medium bowl. Using a handheld electric mixer, beat on low to incorporate, then beat on medium for about 1 minute until the frosting is light and fluffy. You can also mix the frosting by hand until it's light and fluffy.
    Mixing the frosting in a bowl.

Assemble and frost the cake:

  • Place one of the cake layers on a cake plate, flat side up. To keep the plate clean, you can line the plate with strips of wax paper to protect the plate (let them overhang), then pull them from underneath the cake once you’re done frosting it. Alternatively, use a cake board.
    The first layer of the cake was placed on a cake board.
  • Place ⅓ cup of frosting in the middle of the cake and use an offset spatula to spread the frosting over the top of the cake.
    Frosting the first layer of the cake.
  • Gently place the second cake layer on top of the first one, flat side up. There’s no need to press on it. Place another ⅓ cup of frosting on top of this second cake, and use the spatula to spread it all over the top of the cake.
    Frosting the second layer of the cake.
  • Use the remaining frosting to frost the sides of the cake.
    Frosting the cake's sides.
  • Once frosted, you can cut the cake and serve it. You can also refrigerate it, covered, until ready to serve. Take it out of the fridge 2 hours before you plan on serving it.
    A fork is holding a piece of cake, showing off its tender crumb.

Notes

  • It's important to use nonstick cake pans and grease them well. Butter works better than nonstick spray. I replace my baking pans once a year, so they are always brand new and truly nonstick. 
  • If your pans are not brand new and super nonstick, line their bottoms with a parchment circle after greasing them and grease the parchment too. 
  • A granulated sweetener in the frosting instead of stevia will feel grainy, so please use a powdered sweetener and add a bit more heavy cream (start with ¼ cup) to get the right consistency.
  • I recommend using Dutch-processed cocoa powder (cocoa treated with alkali) in the frosting. It's milder and less acidic than natural cocoa powder. This is not mandatory, but I tried both options, and I like the frosting better with the Dutched cocoa.
  • Make sure the cake layers are completely cool before frosting the cake, or the frosting will melt as you spread it on the warm layers. You can speed up the process by placing the cakes, still on the cooling rack, in the fridge.
  • You can store this cake in the fridge, covered, for up to five days. I don't own a cake dome, so I cover the cake plate with an inverted salad bowl. Do remember to take the cake out of the fridge at least an hour, and preferably two hours, before you plan on enjoying it. Frosting is always best at room temperature.

Nutrition per Serving

Serving: 1 slice | Calories: 391 kcal | Carbohydrates: 7 g | Protein: 9 g | Fat: 38 g | Saturated Fat: 16 g | Sodium: 180 mg | Fiber: 3 g | Sugar: 1 g

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  1. Janet B says

    May 24, 2025 at 12:42 pm

    Can this be made in a 13x9 pan using the same instructions?

    Reply
    • Vered DeLeeuw says

      May 24, 2025 at 1:29 pm

      Hi Janet,
      Yes, but you might have extra batter. Fill the 13x9 pan no more then 2/3 full.
      It will likely take longer to bake. Test with a toothpick in the center — it should come out clean or with a few moist crumbs.

  2. BobT says

    February 04, 2025 at 7:48 am

    Was getting ready to make this Keto Birthday cake based on the full recipe and just realized I have a Question I didn't realize before: recipe card states Almond flour, FINELY ground, but the flour link and picture both indicate Super Fine ground. My research says ratio for substituting between the two is Fine 1 Cup: 1 1/4 Cup superfine.
    When I last made this recipe, I used fine ground without any adjustment and it seemed to come out fine. Should I be adjusting quantity to use the fine ground flour?

    Reply
    • Vered DeLeeuw says

      February 04, 2025 at 10:22 am

      Hi Bob,
      Both work - no need to make adjustments. It's mostly important to avoid using natural almond meal.
      However, since I typically use Bob's Red Mill superfine almond flour, I went ahead and edited the recipe to reflect that. Thank you for pointing it out.

  3. BobT says

    February 01, 2025 at 10:37 am

    5 stars
    I love this cake! Simple to make and very tasty. I did substitute granular allulose/monk sweetener and added 1 TBsp of milk as suggested.
    Relatively new to baking, let alone low carb but not strict keto. So this simple recipe has become my GOTO recipe for a basic cake and am now using it with variations to make other cakes, like a spice cake.
    I did modify it for and 8"x8" by simply scaling the recipe back to 8 slices (67%) to match the surface area difference from two 8" rounds. Happens to make the egg quantity of 4 whole eggs as well. With only 2 in our household, I try to scale back any recipes to fit a smaller pan using the quantity of whole eggs as a gauge.

    Now a question - Any reason I couldn't use this cake recipe in making a Boston Creme Pie?

    Reply
    • Vered DeLeeuw says

      February 01, 2025 at 11:25 am

      Hey Bob,
      Thank you very much for yet another detailed review!
      I think this would work for Boston cream pie. However, I haven't tried it myself. I would love to hear your thoughts if you give it a try!

  4. Janet says

    January 18, 2025 at 1:48 pm

    If I were to halve the recipe, would I bake it in an 8 inch glass square like your chocolate cake recipe?

    Reply
    • Vered DeLeeuw says

      January 18, 2025 at 2:08 pm

      Hi Janet,
      I assume you're going for a 1-layer cake topped with one layer of frosting.
      An 8-inch square pan holds 8 cups while an 8-inch round pan holds 6 cups. So, you would need to use an 8-inch round pan.
      If you don't own an 8-inch round pan and would like to use an 8-inch square pan, you would need to halve the ingredients and then increase them by about a third. Try these amounts:
      4 large eggs, 3 tablespoons milk, 4 tablespoons butter, 1 teaspoon vanilla, 1 heaping teaspoon stevia glycerite, 6 ounces almond flour, pinch salt, 1 teaspoon baking powder.
      For the frosting: 10 tablespoons unsalted butter, 1/3 cup heavy cream, 1/3 cup cocoa powder, 1/2 teaspoon vanilla, 1/2 heaping tablespoon stevia glycerite.
      I hope it works!

  5. Marilyn says

    December 29, 2024 at 11:25 pm

    Can this be used for cupcakes? If so how long would you bake them?

    Reply
    • Vered DeLeeuw says

      December 30, 2024 at 10:06 am

      Hi Marilyn,
      I think so. Please use greased foil or parchment liners - they will stick to standard paper ones. Bake for 15 minutes and check with a toothpick.

  6. Elaine says

    December 01, 2024 at 11:31 am

    5 stars
    This recipe was spectacular!!! so easy to make and create, and my family inhaled it!

    Reply
    • Vered DeLeeuw says

      December 01, 2024 at 12:01 pm

      Yay! I'm so glad this was a success, Elaine! Thank you for taking the time to share your experience.

A photo of Vered DeLeeuw.

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Healthy Recipes Blog was founded in 2011 by Vered DeLeeuw. It features real food recipes with a focus on low-carb and gluten-free ingredients. All recipes are nutritionally reviewed by a Registered Dietitian. Contact us at HealthyRecipesBlog@gmail.com.

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