Print Options:

FLOURLESS FOUR-INGREDIENT PEANUT BUTTER CAKE IN A MUG

Courses
Servings 1
Calories 395 kcal
Ingredients
  • 3 tablespoons unsweetened peanut butter (48 g)
  • 2 tablespoons erythritol crystals (26 g)
  • 1 egg
  • 1/4 teaspoons aluminum-free baking powder
  • 1/4 teaspoons vanilla extract (optional)
Instructions
  1. Place all ingredients into a large microwave-safe mug and mix vigorously with a spoon to form a smooth batter. Microwave on high for 1 minute and 30 seconds. Check the cake after 1 minute and adjust the overall cooking time according to your microwave oven. Don’t overbake. Let cool until warm and serve. 

Nutrition Facts

Amount Per Serving
Calories 395
% Daily Value *
Total Fat 32.6g51%
Total Carbohydrate 5.1g2%
Protein 19.4g39%

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

Note

VARIATION: It’s easy to vary this one-mug wonder. For peanut butter and chocolate chip cake, add 2 tablespoons (22 g) dark chocolate chips or chopped homemade sugar-free chocolate to the batter and mix well. For a peanut-butter-and-jelly cake, drop 1 tablespoon (15 g) Easy Sugar-Free Strawberry Jam into the batter before baking. Use a fork to create a swirl in the batter, then bake.