Keto Peanut Butter Mug Cake


Keto Peanut Butter Mug Cake

A single serving microwave peanut butter mug cake that is only three ingredients. It’s quick, easy and is also keto-friendly, low carb, wheat flour free, and gluten free.
‏‏‎ ‎
Keyword keto
Prep Time 3 minutes
Cook Time 2 minutes
Total Time 5 minutes
Calories 318kcal


  • 1 large egg
  • 2 ½ tbsp natural creamy unsalted peanut butter
  • 2 ½ tsp natural mate all purpose granular stevia (or sugar substitute of your choice equivalent to 1 tbsp + 2 tsp sugar)


  • In a microwave-safe mug that can hold at least 12oz of liquid, add all ingredients. Mix with a whisk until batter is completely smooth and egg is fully incorporated with no egg streaks remaining. Your batter should look like melted peanut butter.
  • Cook in the microwave at full power for about 1 minute. I used a 1000 watt microwave. You may need to adjust cooking time and power if your microwave is a different wattage. Cake is best enjoyed warm.


Nutrition Facts
Calories from Fat: 225Sugar: 1g
Total Fat: 25gProtein: 15g
Saturated Fat: 4gCholesterol: 210mg
Dietary Fiber: 3gSodium: 80mg
Total Carbohydrates: 9gPotassium: 337mg
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