The Best Easy KETO Birthday Cake Recipe

The Best Keto Birthday Cake Recipe
Written by The Protein Chef

Happy Birthday to me? Happy Birthday to you? Either way, it’s my birthday today so let’s do another birthday cake recipe! This time we’re gonna do a low carb or Keto Birthday Cake depending on what ingredients you use. Don’t worry, you can add protein to it too!

It’s hard to satisfy everyone but I think this keto birthday cake recipe can get most of you and if it doesn’t? At least I’m allowed to cry on my birthday! Now let’s get right into this super easy keto birthday cake recipe.

Keto Birthday Cake

Start this one with a large bowl. Add into that bowl 4 large eggs, 2 tablespoons of melted butter or coconut oil, 1/4 cup of milk substitute, 1 1/2 teaspoons of vanilla extract, 1/2 cup of erythritol, 1 1/2 cups of almond flour, 1 scoop of optional vanilla protein powder, 1/2 teaspoon of salt, and 1 1/2 teaspoons of baking powder.

Mix all of those together until smooth. Next, take out our favorite 6” cake pan, line it with some parchment paper or non-stick cooking spray, and bake your cake on 350F/176C for around 15-20 minutes. Your time will depend on how big, small, and/or how many pans you used so just keep an eye on it!

Keto Frosting

Every good cake needs an equally good frosting so let’s make that good keto frosting.

Take out a bowl and mix together 6 ounces of cream cheese and 3 tablespoons of butter until it starts to look fluffy. Next, add in 1/3 cup of erythritol, 1 teaspoon of vanilla extract, 1 scoop of optional vanilla protein powder, and 3 tablespoons of heavy cream.

Mix those together until it looks like frosting or you cave and start licking the mixer. This keto frosting is delicious and when you spread it over the whole cake, it really doesn’t hurt the macros too much. You can change it up by using full, reduced, or fat free cream cheese which I suggest below.

Want a lower fat frosting? Check this Protein Frosting recipe out!

If you didn’t eat all of your keto frosting go ahead and spread it over your future keto birthday cake! Top that cake with whatever you want. Today I’m using sprinkles (not keto friendly) because they look good in pictures and well, because I like sprinkles.

Cut your cake, serve it to yourself, and enjoy your birthday without having to sing to yourself…or a camera like I did earlier.

The Best Keto Birthday Cake Recipe
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5 from 1 vote

The Best Easy KETO Birthday Cake

This is The Best Easy Keto Birthday Cake you can make! Simple ingredients, tons of flavor, and flexible for almost any diet!
Prep Time5 mins
Active Time20 mins
Total Time25 mins
Course: Dessert
Cuisine: American
Keyword: birthday cake, keto, keto cake, keto frosting, low carb, low carb cake
Servings: 8
Calories: 196kcal
Cost: $4.50



  • 4 Large Whole Eggs
  • 2 Tablespoons Unsalted Butter (Melted) or Coconut Oil, Unsweetened Apple Sauce
  • ¼ Cup Milk Substitute 2 Ounces
  • 1 ½ Teaspoons Vanilla Extract
  • ½ Cup Erythritol or Other Sweetener
  • 1 ½ Cups Almond Flour 168g
  • 1 Scoop Vanilla Protein Powder *Optional
  • ½ Teaspoon Salt
  • 1 ½ Teaspoons Baking Powder


  • 6 Ounces Cream Cheese Full, Reduced, or Fat Free
  • 3 Tablespoons Butter or Coconut Oil
  • Cup Erythritol or Other Sweetener
  • 1 Teaspoon Vanilla Extract
  • 1 Scoop Vanilla Protein Powder *Optional
  • 3 Tablespoons Heavy Cream



  • Melt your butter
  • Add all of your Cake ingredients into a large bowl
  • Mix them together until smooth
  • Coat or line your favorite cake pan(s) with non-stick cooking spray or parchment paper
  • Evenly distribute your mix if you’re making multiple layers
  • Bake your cake on 350F/176C for around 15-20 minutes (this will change depending on your pan size so keep an eye on it)


  • Mix together your Cream Cheese and Butter until it starts to look fluffy
  • Add in the rest of your Frosting ingredients
  • Continue mixing those together until it looks like frosting
  • Spread your however you want!



Use the cake ingredients for a base and customize the rest of it to fit your macros!
Calories Per Slice without Protein Powder and No Frosting (Use your own) (Makes 8):
  • Calories: 196
  • Fat: 16.6g
  • Saturated Fat: 3.2g
  • Sodium: 57.5mg
  • Carbs: 4.2g (Net Carbs: 2g)
  • Fiber: 2.2g
  • Sugar: .7g
  • Protein: 7.5g
Calories Per Slice with Protein Powder & Keto Frosting (Makes 8):
  • Calories: 312
  • Fat: 25.7g
  • Saturated Fat: 9.2g
  • Sodium: 202.5mg
  • Carbs: 5g (Net Carbs: 2.5g)
  • Fiber: 2.5g
  • Sugar: 1.7g
  • Protein: 15.2g


Calories: 196kcal | Carbohydrates: 4.2g | Protein: 7.5g | Fat: 16.6g | Saturated Fat: 3.2g | Sodium: 57.5mg | Fiber: 2.2g | Sugar: 0.7g
Tried this recipe?Mention @TheProteinChef or tag #theproteinchef!

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About the author

The Protein Chef

Derek Howes is a personal trainer and chef with over a decade of experience in the gym and kitchen. Derek, who is also known as The Protein Chef on his blog and YouTube channel shows his viewers every week that food doesn’t need to be boring or repetitive, it’s all about balance, moderation, and having the knowledge to change things up. His recipes which have been featured in the news, magazines, and on TV are cheap, quick, AND delicious! His motto in life is “everything in moderation” and is without question the most important habit he follows.


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