Category, , , , , , DifficultyBeginner

Looking for an easy & quick keto snack? This 5-minute keto blueberry mug cake is perfect for you! Keto mug cake with only 4.7g net carbs per serving!

Easy Keto Blueberry Mug Cake
Yields2 Servings
Prep Time3 minsCook Time2 minsTotal Time5 mins
 2 tbsp (0.5oz/16g) finely ground almond flour
 2 tbsp (0.5oz/16g) finely ground coconut flour
 2 tbsp (1oz/28g) granulated erythritol
 (50g) frozen blueberries
 1 egg
 1 tbsp (15ml) unsweetened almond milk
 1 tbsp (15ml) melted butter or coconut oil
 ½ tsp (gluten-free) baking powder
Optional: Blueberry Cream Cheese Topping
 1 tbsp (13g) full-fat cream cheese
 ½ tbsp (4g) powdered erythritol
 approx. a handful of mashed blueberries
1

Mix all of the ingredients except for the frozen blueberries in a middle-sized bowl.
Whisk until you get a smooth and chunk-free dough.

2

Add the blueberries last and mix again until they are evenly distributed throughout the dough.

3

Grease your microwave-safe mug or bowl with cooking oil that doesn't have a strong taste (I like to use coconut oil, butter or avocado oil).

4

Add your cake batter into a mug or bowl (the mug should be at least double the size of the mixed ingredients).

Instructions Microwave:
5

Microwave for about 1-3 minutes.
The cooking time in your microwave may vary heavily depending on what microwave and what settings you're using.
A broad rule of thumb: Approx. 1 Minute at 1200 Watt and more like 2-3 minutes at <600 Watt.

If you don't know the Wattage power of your microwave I'd recommend baking your mug cake for a shorter time period (60 seconds) first and continue baking for a few more seconds if needed.
This will avoid that the mug cake dries out.
You can test if your mug cake is completely cooked by pricking the center with a toothpick - if it comes out "clean" it's ready!

6

Enjoy while it's still warm or cover with plastic wrap and enjoy cold whenever you want.
Both options taste good!

Instructions Oven:
7

Preheat your oven to 350 degrees Fahrenheit (180°C).
Follow the same steps as above.
Bake your mug cake for about 10-15 minutes.
You can test if your mug cake is completely cooked by pricking the center with a toothpick - if it comes out "clean" it's ready!

8

Optional:
Mash a handful of blueberries (approx. 10-15 blueberries) with a fork and mix with the remaining ingredients for the blueberry cream cheese topping.
Add to your keto blueberry mug cake before serving.

9

Enjoy while it's still warm or cover with plastic wrap and enjoy cold whenever you want.
Both options taste good!

*This post contains affiliate links. If you buy something through one of those links, I will receive a small commission at no extra cost to you.
Thank you for supporting my site!

Nutrition Facts

Serving Size 1/2 mug cake

Servings 2


Amount Per Serving
Calories 212
% Daily Value *
Total Fat 13.1g21%
Total Carbohydrate 13.6g5%
Dietary Fiber 8.9g36%
Protein 13.2g27%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.

Ingredients

 2 tbsp (0.5oz/16g) finely ground almond flour
 2 tbsp (0.5oz/16g) finely ground coconut flour
 2 tbsp (1oz/28g) granulated erythritol
 (50g) frozen blueberries
 1 egg
 1 tbsp (15ml) unsweetened almond milk
 1 tbsp (15ml) melted butter or coconut oil
 ½ tsp (gluten-free) baking powder
Optional: Blueberry Cream Cheese Topping
 1 tbsp (13g) full-fat cream cheese
 ½ tbsp (4g) powdered erythritol
 approx. a handful of mashed blueberries

Directions

1

Mix all of the ingredients except for the frozen blueberries in a middle-sized bowl.
Whisk until you get a smooth and chunk-free dough.

2

Add the blueberries last and mix again until they are evenly distributed throughout the dough.

3

Grease your microwave-safe mug or bowl with cooking oil that doesn't have a strong taste (I like to use coconut oil, butter or avocado oil).

4

Add your cake batter into a mug or bowl (the mug should be at least double the size of the mixed ingredients).

Instructions Microwave:
5

Microwave for about 1-3 minutes.
The cooking time in your microwave may vary heavily depending on what microwave and what settings you're using.
A broad rule of thumb: Approx. 1 Minute at 1200 Watt and more like 2-3 minutes at <600 Watt.

If you don't know the Wattage power of your microwave I'd recommend baking your mug cake for a shorter time period (60 seconds) first and continue baking for a few more seconds if needed.
This will avoid that the mug cake dries out.
You can test if your mug cake is completely cooked by pricking the center with a toothpick - if it comes out "clean" it's ready!

6

Enjoy while it's still warm or cover with plastic wrap and enjoy cold whenever you want.
Both options taste good!

Instructions Oven:
7

Preheat your oven to 350 degrees Fahrenheit (180°C).
Follow the same steps as above.
Bake your mug cake for about 10-15 minutes.
You can test if your mug cake is completely cooked by pricking the center with a toothpick - if it comes out "clean" it's ready!

8

Optional:
Mash a handful of blueberries (approx. 10-15 blueberries) with a fork and mix with the remaining ingredients for the blueberry cream cheese topping.
Add to your keto blueberry mug cake before serving.

9

Enjoy while it's still warm or cover with plastic wrap and enjoy cold whenever you want.
Both options taste good!

*This post contains affiliate links. If you buy something through one of those links, I will receive a small commission at no extra cost to you.
Thank you for supporting my site!

Easy 5-Minute Keto Blueberry Mug Cake