A single serving microwave peanut butter mug cake that has only three ingredients. It’s quick, easy and is also keto-friendly, low-carb, wheat flour free, and gluten-free.


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

1 large egg


01. In a microwave-safe mug that can hold at least 12 oz 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.

02. 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.


Calories 318

Calories from Fat 225

Total Fat 25 g

Saturated Fat 4 g

Cholesterol 210 mg

Sodium 80 mg

Potassium 337 mg

Total Carbohydrates 9 g

Dietary Fiber 3 g

Sugars 1 g

Protein 15 g

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