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a keto mug cake with peanut butter topped with cream in a glass cup
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5 from 50 votes

Keto Peanut Butter Mug Cake

Sometimes only a moist, fluffy Keto peanut butter mug cake will do! This sugar free, low carb microwave dessert recipe takes 4 minutes from start to finish. Dairy-free option!
Prep Time3 minutes
Cook Time1 minute
Total Time4 minutes
Course: Dessert
Cuisine: British
Servings: 2
Calories: 280kcal

Ingredients

  • 2 tablespoon peanut butter soft
  • 1 ½ tablespoon coconut flour
  • 1 ½ tablespoon powdered sweetener add an additional ½ teaspoon if you have a sweet tooth
  • 3 tablespoon heavy cream or coconut cream for dairy free
  • 1 egg medium
  • ¼ teaspoon baking powder
  • 1 tbsp dark chocolate, chopped or sugar free chocolate chips optional

Instructions

  • Mix all ingredients in a tall glass or mug, using a fork. Fold in the chocolate last, if using.
  • Microwave on high for up to 90 seconds. Check after 50 seconds and continue with 10-second bursts until the cake peels away from the mug and the centre is cooked.

Video

Notes

For best results, make sure your peanut butter is soft. Almond butter also works. 
See the tips in the post about the choice of vessel. It's also possible to use 2 ramekins. 
Optional tweaks: ½ teaspoon vanilla extract, 1 teaspoon cinnamon
Decorate with whipped cream or coconut cream and chocolate chips (decoration is not included in the nutrition details).
The cake is best enjoyed warm. 
Nutrition (3.6 net carbs p.p.) is calculated on the basis of 2 people sharing - this cake is VERY filling. 

Nutrition

Calories: 280kcal | Total Carbohydrates: 7.2g | Protein: 10.3g | Fat: 22.9g | Saturated Fat: 9g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 6.1g | Fiber: 3.6g | Sugar: 3.4g