Keto Single Serve Cake

Keto Single Serve Cake

Gluten FreeSugar FreeLow CarbKeto

This beautiful Keto Single Serve Cake is sure to please you on just about any occasion!  Whether it is for a birthday, Mother’s Day, Valentine’s Day – the choice is yours!

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Keto Single Serve Cake


Keto Single Serve Cake

I set out to create a single serve birthday cake or Mother's Day cake or for any occasion, really!  

It was my birthday last week.  Hubby was on a 24 hour shift.  My older kiddos were gone for the night.  My 5 year old was sick.  Sigh...

So I decided to try to create a pretty keto single serve cake since I was the only one eating it.  

Just look at how pretty this is!

Keto Single Serve Cake


Sometimes we just don't want to make an entire dessert and simply want to just make enough to dig in ourselves, right?

We don't have to share EVERYTHING!!

Especially when it has cute little pink flowers!

Or what about purple flowers?  I did that too!  Although I have to admit that even though purple is my favorite color, I prefer the pink flowers.  

They just look better!  

Have I made the disclaimer that I am not a cake froster?  I'm sure you could tell that already though!

Keto Single Serve Cake

Can I make this keto single serve cake in the oven?

Well, I'm sure you can, but I'm not sure how long.  I"ll test that out soon!

But for now, this is meant to be a quick microwavable dessert!


I chose to use Lakanto Monkfruit for this recipe.  It is probably my top sweetener of choice.  Followed closely by erythritol.

I often will use liquid stevia in combination with these two sweeteners but I didn't have to with this one.  I made it several times, trying to get it down to the yummiest and least amount of ingredients!

Kitchen Essentials

Hand Beaters - You will need hand beaters for the frosting, not the cake part.  

Mug or Ramekin - I used a mug rather than my normal ramekins.  But these awesome little ramekins are useful for so many of my single serve recipes (see below)!

Mixing Bowls - I mean, you need at least one, right?

Keto Single Serve Cake


Tip #1

This cake is firm yet the frosting likes to grab when you spread it.  I made that mistake on the first one.  

On the second one, I warmed it up for about 7 seconds and that was just enough to make it spread easily without grabbing the cake.

It should be fine if your cream cheese is truly room temperature, but sometimes I jump the gun and use slighter colder cream cheese or butter and then pay the price later!

Tip #2

If it looks like it is bubbling over in the microwave, just open the door for 1 second and close and keep cooking.  It is enough to simmer it down a bit (just like taking the lid off a pot that is boiling over).

Other Single Serve Desserts You Might Like:

Peppermint Mug Cake

Lemon Mug Cake

Coconut Cream Pie Cups

Mint Chocolate Cream Cups    

Keto Single Serve Cake

Keto Single Serve Cake

Trina Krug
A delightful single serve cake for any occasion! Birthdays and Mother's Day come to mind right away!
4.49 from 25 votes
Prep Time 5 minutes
Cook Time 1 minute
Additional Time 5 minutes
Total Time 11 minutes
Servings 1 cake
Calories 653 kcal






  • Add almond flour, coconut flour, monkfruit, and baking powder to a medium bowl and mix well.
  • In a small bowl, add egg, heavy whipping cream, vanilla and almond and mix together until well combined.
  • Add egg mixture to flour mixture and mix and fold with a spatula.
  • Melt butter into mug and coat the bottom and sides. Remove excess.
  • Add batter to mug and microwave for 90 seconds or until cooked.
  • Lightly jiggle mug and flip upside down.
  • Let cool


  • Combine all ingredients into small bowl and beat until creamy.
  • I took a small portion out and colored it pink with coloring. This is optional.
  • Be careful frosting the cake as it will be soft. Warming the frosting will help if needed!


Substitutions: If you don't have coconut flour, you can skip it and just add an extra tablespoon of almond flour!


Serving: 1Calories: 653kcalCarbohydrates: 6gProtein: 12gFat: 66gSaturated Fat: 40gPolyunsaturated Fat: 20gTrans Fat: 2gCholesterol: 355mgSodium: 689mgFiber: 1gSugar: 4g
Tried this recipe?Let us know how it was!

9 thoughts on “Keto Single Serve Cake”

  1. I made this tonight. So yummy. The texture of the cake was spot-on, too. I will be making this again.

      1. I really enjoyed making this mug cake. I added vanilla extract and coconut extract along with a teaspoon of unsweetened coconut. It turned out lovely.

  2. ****THANK YOU FOR THIS RECIPE!!! I have tried several different keto baked good recipes and this is the first one that we will be making again…and regularly!!! We both LOVED it!

    My hubby loves chocolate so I decided to try add 10 grams cocoa powder to the frosting as well as 1 T extra powdered swerve, extra splash vanilla & 1 extra t butter.

    Froze the cakes and refrigerated frosting after making…when ready to frost nuke frosting 15 seconds which spread perfectly and did not grab the cakes like before.

    *** used 2 mugs (Sbucks) half recipe of cake in each, nuked both 90 seconds to cook = perfect ***

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