Chocolate mug cake in a floral mug, topped with whipped cream and chocolate chips, on a textured surface with a beige cloth in the background.
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Keto Chocolate Peanut Butter Mug Cake

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This keto chocolate peanut butter mug cake is the perfect single-serve dessert that’s rich, satisfying, and made in just minutes! This mug cake is the perfect quick-fix for chocolate and peanut butter lovers who want to keep things low-carb. Try it out and satisfy your sweet tooth in minutes!

Chocolate mug cake in a floral-patterned mug, on a textured surface with a beige cloth in the background.

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Why You’ll Love This Recipe

  • Quick & Easy – Ready in just a few minutes.
  • Low-Carb & Keto-Friendly – Made without flour or sugar.
  • Rich & Chocolatey – Perfectly sweet with a deep cocoa flavor.
  • Minimal Cleanup – One mug, one spoon, no mess!
A chocolate mug cake topped with whipped cream and chocolate chips in a floral patterned mug.

Ingredients

Labeled ingredients on a marble surface: peanut butter, sweetener, vanilla extract, cocoa powder, egg, almond milk, baking powder, chocolate chips.
  • Egg – Helps bind the ingredients together and provides structure.
  • Sweetener – Use your favorite low-carb sweetener like monk fruit or allulose.
  • Almond Milk – Keeps the cake moist and light. Coconut milk can be substituted.
  • Cocoa Powder – Gives the cake its rich chocolate flavor. Use unsweetened cocoa powder for the best results.
  • Vanilla Extract – Enhances the sweetness and depth of flavor.
  • Peanut Butter – Adds a creamy, nutty richness. Opt for natural peanut butter with no added sugar.
  • Baking Powder – Provides lift, making the cake fluffy and soft.
  • Optional Chocolate Chips – For an extra chocolatey boost, use sugar-free chocolate chips or dark chocolate.

How To Make Chocolate Peanut Butter Mug Cake

A cup filled with ingredients including peanut butter, yogurt, an egg, and possibly syrup or honey on a marble surface.

Mix the wet ingredients together.

A white mug on a marble surface contains liquid topped with a heap of cocoa powder.

Add the dry ingredients and stir.

A mug filled with chocolate batter, topped with chocolate chips, sits on a marble surface.

Sprinkle chocolate chips on top.

A chocolate mug cake in a floral mug sits on a stone surface, with a beige cloth in the background.

Microwave for a quick cake!

Recipe Tips

  • Adjust Sweetness: Taste the batter before microwaving and adjust the sweetener if needed.
  • Peanut Butter Swirl: Drop in the peanut butter last and gently swirl it for a marbled effect.
  • Cooking Time Varies: Start with 60 seconds and add 10-second increments until done.
  • Dairy-Free Option: Swap the almond milk with coconut milk if needed.
A chocolate mug cake in a floral-patterned mug sits on a textured surface with a beige cloth in the background.

More Keto Mug Cake Recipes

Keto Raspberry Mug Cake

Almond Flour Chocolate Mug Cake

Chocolate mug cake in a floral mug, topped with whipped cream and chocolate chips, on a textured surface with a beige cloth in the background.

Keto Chocolate Peanut Butter Mug Cake

This quick and easy low-carb mug cake is rich, chocolatey, and packed with peanut butter goodness! Made with simple ingredients like cocoa powder, almond milk, and natural peanut butter, it’s the perfect keto-friendly dessert for when you need a sweet treat in minutes.
Prep Time 3 minutes
Cook Time 1 minute
Total Time 4 minutes
Course Dessert
Cuisine gluten free, keto
Servings 1 serving
Calories 308 kcal

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Ingredients
 
 

  • 1 large egg
  • 1 1/2 tablespoons monk fruit or other sweetener
  • 2 tablespoons almond milk
  • 1 tablespoon cocoa powder, unsweetened
  • 1/2 teaspoon vanilla extract
  • 2 tablespoons peanut butter unsweetened
  • 1/2 teaspoon baking powder
  • 1 teaspoon chocolate chips, sugar-free optional

Instructions
 

  • In a microwave-safe mug, whisk the egg. Stir in the almond milk, vanilla extract and peanut butter until smooth.
  • Mix in the cocoa powder and baking powder until fully combined. If using, fold in the chocolate chips.
  • Cook on high for 60–90 seconds, or until the cake is set but still slightly soft in the center. Cooking time may vary depending on your microwave.
  • Let it cool for a minute before digging in. Optionally, top with a dollop of whipped cream or extra peanut butter!

Notes

Makes 1 serving

Nutrition

Serving: 1servingCalories: 308kcalCarbohydrates: 14gProtein: 15gFat: 24gFiber: 4gNet Carbs: 10g

The information shown is an estimate provided by an online nutrition calculator.

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