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Keto Strawberry Lemonade Cake

This moist and fluffy lemon cake with a smooth and creamy strawberry frosting is one of the best low carb cakes you will ever make! 

Prep Time
10 mins
Cook Time
10 mins
Total Time
35 mins
Servings: 14
Calories: 379 kcal
Course: Dessert
Cuisine: American

Ingredients

For the Cake
  • 3 cups almond flour
  • ½ cup oat fiber see notes
  • 1 ½ cups Swerve confectioners
  • 6 whole eggs separated
  • 1 cup sour cream
  • ¼ cup heavy cream
  • ⅓ cup fresh lemon juice
  • zest of 2 lemons
  • 2 tablespoons baking powder
  • 1 teaspoon vanilla extract
  • Pinch of salt
For the Frosting
  • 8 ounces cream cheese
  • 1 cup heavy cream
  • ½ cup pureed fresh strawberries
  • ½ cup unsalted butter room temperature
  • ⅔ cup Swerve confectioners
  • 1 teaspoon vanilla extract
  • Optional ¼ cup freeze dried strawberries finely ground (see notes)

Instructions

To Make the Cake
    Cup of Yum
  1. Preheat oven to 350F. In a mixing bowl, add in the almond flour, oat fiber, baking powder and salt. Whisk until well combined and set aside.
  2. In another bowl, add in the egg white and beat using a hand mixer until you have stiff peaks, then set aside.
  3. In a third bowl, add in the egg yolks, Swerve confectioners, sour cream, heavy cream, vanilla extract, lemon juice and zest, then mix until well combined. Add in the egg whites and mix. Then add in the dry ingredients and mix until everything is well combined, but do not over mix.
  4. Pour the batter into 2 greased 9' round cake pans lined with parchment paper rounds (which are also great to use in the air fryer!). Using an offset spatula, spread the batter evenly and bake for 25-30 minutes or until a toothpick, when inserted, comes out clean.
  5. Allow to cool completely while you make the frosting.
To Make the Strawberry Frosting
  1. Add the heavy cream to a mixing bowl and whip using a hand mixer till you get stiff peaks, then set aside. In a separate bowl add in the cream cheese, butter and Swerve confectioners. Whip until well combined and fluffy.
  2. Add in the pureed strawberries, vanilla extract and the (optional) ground freeze dried strawberries and mix well. Mix in the whipped cream and continue mixing until there are no more streaks and the frosting is light and fluffy.
To Assemble the Cake
  1. Take the first cake and put in on your cake stand or plate rightside up. Add a little less than half the frosting and spread evenly using an offset spatula. Add the second cake layer over the top, upside down, which will ensure the cake is level.
  2. Add most of the remaining frosting over the top, spreading it out evenly over the top and over the sides a little. Using the remaining frosting to cover the sides of the cake. Now you can serve the cake as is, or you can decorate the top with sliced strawberries and/or lemon any way you like.

Notes

  • While using the freeze dried strawberries is optional, it is HIGHLY recommended that you use it. The reason being that it will take this frosting from good, to out of this world amazing. No really, you won’t believe the punch of strawberry flavor this gives the frosting.
  • If you decide against using it, I would consider adding a more strawberry puree to the frosting, maybe another ½ cup or so. The frosting will not have the same punch of flavor and won’t be quite as thick, but will still taste great.
  • Oat Fiber is made from grinding the outer husks of oats. How healthy is oat fiber? It's pure insoluble fiber, which doesn't dissolve in water and isn't broken down in the digestive tract, so it has zero net carbs and is perfect for a Keto Diet. It helps give a more traditional texture and that's why I use it so often. Check out all the Keto Oat Fiber Recipes you can make!
  • To get the best results, it's best to use oat fiber if you can. If you're unable to find it, try a combination of psyllium husk powder and coconut flour. Since both are very absorbent, you might have to add more liquid.

Nutrition Information

Calories 379kcal (19%) Carbohydrates 11g (4%) Protein 9g (18%) Fat 36g (55%) Saturated Fat 14g (70%) Fiber 6g (24%) Sugar 4g (8%)

Nutrition Facts

Serving: 14Serving

Amount Per Serving

Calories 379

% Daily Value*

Calories 379kcal 19%
Carbohydrates 11g 4%
Protein 9g 18%
Fat 36g 55%
Saturated Fat 14g 70%
Fiber 6g 24%
Sugar 4g 8%

* Percent Daily Values are based on a 2,000 calorie diet.