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!  The combination of these two flavors is an absolute match made in heaven.

strawberry cake on cake stand with strawberries on top with slice held up

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This beauty is a complete show stopper. The gluten free lemon cake layers are tender and fluffy and have the most amazing lemon flavor while the unbelievably delicious strawberry frosting incases them with a burst of flavor with every single bite.

strawberry cake on cake stand with strawberries on top with slice missing

The perfect balance of sweetness from the strawberry sugar free frosting and the tanginess of mouth watering lemonade cake layers, makes this the perfect recipe for a fresh and summery dessert.

overhead view of strawberry cake with strawberries on top and slice of lemon

This amazingly flavorful cake is perfect to serve at your next special occasion dinner or use as a low carb birthday cake. Even those who aren’t following a Keto diet will love this cake, trust me on this!

What’s in Keto Strawberry Lemonade Cake

*Exact measurements are listed in the recipe card below.

How to Make Keto Strawberry Lemonade Cake

To Make the Gluten Free Lemonade Cake

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.

dry ingredients for cake in glass bowl

In another bowl, add in the egg white and beat using a hand mixer until you have stiff peaks, then set aside.

egg whites being whipped with hand mixer

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.

wet ingredients for cake in glass bowl

Add in the egg whites and mix.

egg whites on top of wet ingredients for cake in glass bowl

Then add in the dry ingredients and mix until everything is well combined, but do not over mix.

wet and dry ingredients for cake in glass bowl

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!).

2 round cake pans with liners

Using an offset spatula, spread the batter evenly and bake for 25-30 minutes or until a toothpick, when inserted, comes out clean.

cake batter in 2 round cake pans

Allow to cool completely while you make the frosting.

To Make the Keto Strawberry Frosting

Add the heavy cream to a mixing bowl and whip using a hand mixer till you get stiff peaks, then set aside.

heavy cream being whipped with hand mixer

In a separate bowl add in the cream cheese, butter and Swerve confectioners.  Whip until well combined and fluffy.  

frosting batter whipped in glass bowl

Add in the pureed strawberries, vanilla extract and the (optional) ground freeze dried strawberries and mix well.

strawberry frosting in glass bowl

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

Take the first cake and put in on your cake platter 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. 

lemon cake on white cake stand being frosted with offset spatula

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.

strawberry frosted cake on cake stand

Now you can serve the cake as is, or you can decorate the top with sliced strawberries and/or lemon any way you like.

strawberry cake on cake stand with strawberries on top

The finished cake is absolutely stunning and would be the perfect Keto birthday cake for that someone special, for a baby shower, wedding shower or just for a little something extra after Sunday lunch.

Tips for Freezing Keto Cake

If you find yourself with leftover cake, or even if you want to make this cake in advance for a future occasion, these tips will ensure your cake is as fresh as the day you baked it.

For freezing cake with almond flour baked in advance: Allow the layers to cool completely. Whatever you do, don’t wrap up a warm cake. That’ll create moisture and moisture will cause freezer burn.

If you have cardboard cake rounds, this will help the cake from breaking while transporting to the freezer and will help it stay together while storing.

Wrap each cooled cake round in double layers of plastic wrap. Place the wrapped layers on a sheet panand place in the freezer until completely frozen before stacking them on top of each other.

For freezing leftover cake with sugar free frosting: Set the frosted cake in the freezer on a plate or sheet pan for about 45 minutes to an hour. Remove it and wrap the frosted cake with double layers of plastic wrap followed by a layer of aluminum foil. Date the outside and store for up to a couple of months for optimal freshness.

Be sure and label the outside with the date you froze it. You can also follow this same method for freezing individual slices of frosted cake. To extend the freezer life even longer, follow the instructions to freeze the cake, then vacuum seal in a food saver storage bag to get all the air out.

To thaw frozen gluten free cake: Frozen cake will form condensation between the plastic wrap and the cake as it thaws. After it has been sitting out on the counter for about 30 minutes, gently remove the plastic wrap and place the cake under a cake dome, similar to this one, that is tall enough for the cake, to finish thawing.

To freeze left over frosting: Place the frosting in a freezer bag and squeeze out all the extra air. Wrap the freezer bag in aluminum foil and label it with the date. Store up to a couple of months in the freezer.

strawberry cake on cake stand with strawberries on top with slice missing

Is Cake with Almond Flour Keto?

Almond flour is a great flour substitute in cakes and other low carb desserts for those on Keto because it is gluten-free, low in carbs, and high in fiber, protein and fat.

What is Oat Fiber? Is Oat Fiber Keto?

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!

What is a Substitute for Oat Fiber?

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.

strawberry cake on cake stand with strawberries on top

How Many Carbs in Strawberries?

For one whole cup of strawberries, there’re about 9 net grams of carbs. This Keto strawberry frosting recipe calls for just 1/2 cup (plus the freeze dried strawberries if you opt to use them).

About the Freeze-Dried Strawberries

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. 

ground freeze dried strawberries in chopper

If you decide against using it, I would consider adding a more strawberry puree to the frosting, maybe another 1/2 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.

pureed strawberries in chopper

More Keto Strawberry Recipes

slice of strawberry lemon cake

More Keto and Low Carb Desserts

PIN Keto Strawberry Lemonade Cake

If you’d like to know more about baking on Keto, this article, Keto Baking Made Easy, is loaded with tips and info that you’ll find helpful. You might also check out my Keto Sweet Treats eBook that has 50 amazing Keto dessert recipes, all with color pics, macros and more! I’m offering it at 50% off when you subscribe to my free weekly emails here.

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strawberry cake on cake stand with strawberries on top with slice missing

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! 
5 from 1 vote
Author: Julianne
Servings 14
PREP 10 minutes
COOK 25 minutes
TOTAL 35 minutes

Ingredients
 

For the Cake

For the Frosting

Instructions
 

To Make the Cake

  • 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.
  • In another bowl, add in the egg white and beat using a hand mixer until you have stiff peaks, then set aside.
  • 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.
  • 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.
  • Allow to cool completely while you make the frosting.

To Make the Strawberry Frosting

  • 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.
  • 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

  • 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.
  • 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.

Recipe 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 1/2 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.

*Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

Course Dessert
Cuisine American
Calories 379kcal
Nutrition Facts
Keto Strawberry Lemonade Cake
Amount per Serving
Calories
379
% Daily Value*
Fat
 
36
g
55
%
Saturated Fat
 
14
g
88
%
Carbohydrates
 
11
g
4
%
Fiber
 
6
g
25
%
Sugar
 
4
g
4
%
Protein
 
9
g
18
%
* Percent Daily Values are based on a 2000 calorie diet.

*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

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5 from 1 vote

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Recipe Rating




One Comment

  1. 5 stars
    Hello Julianna 🌹 My ingredients are assembled to make this I-know-it’s-going-to-be-awesome cake. When re-reading instructions, I see where the dry ingredients were mixed in AFTER beaten egg whites. Doesn’t that deflate them? I’m going to fold in egg whites last from what I have learned. I’ll be excited to share my results😊! 💛🍋~ ♥️🍓