This Keto Chocolate Mug Cake is made with coconut flour and cocoa powder for a satisfying piece of cake you can make instantly. It takes 5 minutes and is keto, gluten-free, and Paleo-friendly.

Within minutes you can make chocolate cake using your microwave. All with simple, easy-to-find ingredients that should be in anyone’s keto pantry.
This one whips up in about 5 minutes from start to finish!
How to make keto chocolate mug cake
When I’m making mug cakes I find it easier to add the ingredients to a bowl and whisk them together inside of trying to do it all in a coffee mug.
You literally add eggs, coconut oil, sweetener, cocoa powder, and coconut flour to a bowl and whisk. Then pour it into your greased coffee mug and microwave.

I have also used microwave-safe bowls instead of coffee mugs lots of times to bake my mug cake in the microwave and it works out great each time.
For a quick frosting, you can use whipped cream, some sugar-free jam, peanut butter, almond butter, etc.
Keto Chocolate Mug Cake FAQ
Yes! Instead of a mug, pour the batter into a 12 ounce ramekin, or 2-6 ounce ramekin bowls. Bake at 350 degrees F for 15 minutes.
Yes, you can use a microwave-safe bowl or ramekins instead of a coffee cup to microwave these in. The cooking time might be different so microwave for 2 ½ minutes and then check the batter and then do 30-second intervals.
You can use any frosting you like on a mug cake. I prefer to use frosting that can be made quickly. I suggest using:
– whipped cream (or coconut whipped cream)
– chocolate chips + a dash of coconut oil or butter, melt it and stir
– Peanut butter, almond butter, cashew butter, etc.
– Peanut butter + chocolate chips, melt it and stir
– Softened cream cheese + sweetener + vanilla, combine
– Sweetener + cinnamon, for a cinnamon sugar topping that tastes like a donut
You can easily make this keto mug cake paleo-friendly by using your favorite Paleo sweetener instead of a keto sweetener. Raw honey, maple syrup, coconut palm sugar, or organic cane sugar would all be great options for this recipe.
I did not test an almond flour version. Generally I’d recommend finding an almond flour recipe for mug cake instead of trying to substitute – almond flour can lead to a greasy bake if you don’t properly balance it.
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Keto Chocolate Mug Cake
This Keto Chocolate Mug Cake is made with coconut flour and cocoa powder for a satisfying piece of cake you can make instantly. It takes 5 minutes and is keto, gluten-free, and Paleo-friendly.
- Prep Time: 2 minutes
- Cook Time: 3 minutes
- Total Time: 5 minutes
- Yield: 1 cake 1x
- Category: Dessert
- Method: Microwave
- Cuisine: American
- Diet: Gluten Free
Ingredients
- 1 large egg
- 4 tbsp powdered erythritol blend (I used Lakanto)
- 2 tbsp coconut oil, liquid + plus a little for greasing the mug
- 1 ½ tbsp cocoa powder
- 1 tbsp coconut flour
- ½ tsp baking powder
- ½ tsp vanilla extract
- Dash of sea salt
Instructions
- First, start by taking a dab of coconut oil or olive oil and coating the inside of a microwave-safe mug.
- In a small bowl, add all of the ingredients.
- Whisk together the batter until combined. It’s ok if the eggs have made some of the coconut oil hard.
- Pour the batter into the coffee mug. Use a spoon to level the batter, so it is smooth.
- Place the unbaked mug cake into the microwave and microwave for 2 ½ minutes. Then check on the mug cake and continue baking in 30-second intervals until baked. It took 3 minutes in my microwave.
- Once baked, eat right away or top with frosting.
Notes
Note: The coffee mug will be hot when finished baking, so I recommend using oven mitts to remove it from the microwave. Since this mug cake has a lot of erythritol I suggest consuming it while the cake is warm. Once it is cool the erythritol crystallizes and makes the texture of the cake feel hard.
Nutrition Facts
- Serving Size: 1 mug cake
- Calories: 369
- Fat: 34.4g
- Carbohydrates: 3.7g
- Protein: 9g



