Keto Chocolate Mug Cake

4.97 from 65 votes

With just over 5 minutes and a few ingredients, you can have a fudgy, chocolatey low carb mug cake made from start to finish. It's perfect for when those occasional emergency chocolate cravings hit, and it's gluten-free and sugar-free too.

Prep Time5

Cook Time1

Total Time6

Course: Desserts

Cuisine: American

Servings: mug cake, 2 servings

Calories: 257kcal

Author: Dane & Becky

Ingredients

2 tablespoons butter
2 tablespoons sugar-free sweetener we used Swerve or Lakanto
1 large egg
¼ teaspoon vanilla extract
2 tablespoons almond flour
1 teaspoon coconut flour
2 tablespoons unsweetened cocoa powder
¼ teaspoon baking powder

Instructions

Place butter and sweetener in a large microwaveable mug cake (10-14 oz.) or ramekin. Heat in the microwave until butter is melted, approximately 30 seconds.
Add the egg and vanilla and stir until combined.
Add the almond flour, coconut flour, cocoa powder, and baking powder, then stir again.
Microwave for 40-60 seconds or until risen and firm on the top. The time may vary depending on the size and shape of your mug. I recommend starting with the lowest time and adding more time if needed.
Serve warm with keto ice cream, keto whipped cream, or your favorite keto frosting.

Video

Notes

You can use your sweetener of choice.
Use dairy-free butter to keep this keto mug cake dairy-free.
Use a large mug and don't fill it more than half to ⅔ full. You'll avoid a mess and a cake that doesn't set in the middle. Or divide the batter into two smaller ramekins to make two keto mug cakes.
Don't skimp on the baking powder. A keto mug cake needs a leavening agent, so ¼ teaspoon baking powder is necessary to make your cake rise. Otherwise, you may end up with a spongy, flat disk instead of a fluffy, springy cake.
Always start with the lowest necessary cooking time. You can add a few seconds at a time if needed until your cake is firm in the center, but don't go over one minute.

Nutrition