You’ll love this keto funfetti mug cake recipe, it’s especially great to make for your birthday! It’s easy to make and super soft and delicious! Mix up all the ingredients, microwave it for a minute and it’s ready!
I believe that a diet that doesn’t include treats is fairly unsustainable. That is why I try to incorporate treats into my diet almost every day!
I’m a huge fan of easy desserts that only use a few simple ingredients. Especially 3 ingredient keto cookies.

Keto Funfetti Mug Cake
Recent years have seen enormous popularity for the keto diet due to its effectiveness in helping people lose weight and improve their health. Low carb, high-fat diets can be challenging to adhere to, especially when it comes to satisfying your sweet tooth. Luckily, the keto funfetti mug cake provides a guilt-free dessert option for keto dieters who want a sweet treat but don’t want to overindulge. It’s only got 3 g net carbs too!
Why you’ll love this funfetti mug cake recipe:
- Easy and quick to make: Unlike traditional cakes that can take a lot of time and effort to make, this recipe only takes a few minutes to prepare and cook in a microwave-safe mug.
- Simple ingredients: You don’t need any fancy ingredients to make this delicious cake. You’ll only need a few basic dry and wet ingredients that you probably already have in your pantry.
- Customizable flavors: This recipe can be easily customized to your personal taste. You can substitute the sprinkles for different flavors or add in some sugar-free chocolate chips for a chocolatey twist.

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Keto Funfetti Cake Ingredients:
Here’s everything you will need to make this microwave mug cake:
- butter
- egg
- almond flour
- sweetener
- baking powder
- vanilla extract
- Sugar free sprinkles
How to make the keto birthday cake:
Step 1: In a microwave-safe mug, melt the butter in the microwave for 20-30 seconds.
Step 2: Add the egg to the butter and mix until fully combined.
Step 3: Add in almond flour, sweetener, baking powder and vanilla extract.
Step 4: Top with sugar-free sprinkles but don’t mix.
Step 5: Microwave for 90 seconds until fully cooked, serve and enjoy!

Can you make this with coconut flour instead of almond flour?
Yes, you can substitute almond flour for coconut flour. However, you’ll need to use less coconut flour since it’s more absorbent than almond flour. We recommend using 1-2 tablespoons of coconut flour instead of 3 tablespoons of almond flour.
Coconut flour is a keto-friendly food because it includes a moderate amount of carbs and protein and a high fat content. It’s naturally low in carbs and high in fat, which is ideal for the keto diet.
What to serve with the keto vanilla mug cake?
Serve this funfetti cake with some whipped cream, keto ice cream or a cream cheese frosting.

Tips:
- Double-check the microwave times to avoid overcooking or undercooking the cake.
- Use a greased mug to avoid the cake from sticking to the sides of the mug.
- Add cream cheese or coconut oil to make the cake more moist.
MORE KETO MUG CAKES TO TRY:
Creamy Lemon Cheesecake In a Mug
3 Ingredient Microwave Cheesecake
Almond Flour Chocolate Mug Cake
Keto Funfetti Mug Cake
This super fun and delicious keto funfetti mug cake is moist and fluffy. Make is as a keto birthday cake or just as a regular dessert and you're guaranteed to feel satisfied!
Ingredients
- 1 tbsp butter
- 1 egg
- 3 tbsp almond flour
- 2 tbsp sweetener
- 1/4 tsp baking powder
- 1/2 tsp vanilla extract
- 1/2tsp Sugar free sprinkles
Instructions
- In a microwave-safe mug, melt the butter in the microwave for 20-30 seconds.
- Add the egg to the butter and mix until fully combined.
- Add in almond flour, sweetener, baking powder and vanilla extract.
- Top with sugar-free sprinkles but don't mix.
- Microwave for 90 seconds until fully cooked, serve and enjoy!
Nutrition Information:
Yield:
1Serving Size:
1Amount Per Serving: Calories: 302Total Fat: 27gSaturated Fat: 10gTrans Fat: 0gUnsaturated Fat: 15gCholesterol: 217mgSodium: 285mgCarbohydrates: 6gFiber: 3gSugar: 1gProtein: 11g
The Nutrition facts are provided as a courtesy and may not be completely accurate.

This Keto Funfetti Mug Cake is a perfect recipe for those on a low-carb or ketogenic diet looking for a sweet treat. With simple ingredients and little time required, it’s a great recipe to have in your collection of easy vanilla mug cake recipes.
It’s also an excellent option for a mini birthday cake or as a healthy funfetti mug cake for your sweet cravings. Try it out and let me know your personal favorite!
Hope you enjoy making this keto birthday cake recipe!
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