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Chocolate Peanut Butter Mug Cake in a white ramekin with peanut butter drizzle on top.
Maryam

Chocolate Peanut Butter Mug Cake

A warm, fudgy single-serving cake that comes together in 5 minutes for when chocolate cravings strike hard.
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Prep Time 3 minutes
Cook Time 1 minute
Total Time 4 minutes
Servings: 1 serving
Course: Dessert, Snack
Cuisine: American
Calories: 385
Ingredients Equipment Method Notes

Ingredients
  

Dry Ingredients
  • 3 tbsp all-purpose flour
  • 2 tbsp unsweetened cocoa powder natural or Dutch-processed both work
  • 2 tbsp granulated sugar
  • 0.25 tsp baking powder
  • 1 pinch of salt
Wet Ingredients
  • 3 tbsp milk whole or 2% preferred
  • 1.5 tbsp neutral oil vegetable, canola, or melted coconut oil
  • 0.25 tsp vanilla extract
Peanut Butter Center
  • 1 tbsp creamy peanut butter do not use natural style - it separates

Equipment

  • 12-ounce microwave-safe mug
  • Small whisk or fork

Method
 

Mix the Batter
  1. In your mug, whisk together the flour, cocoa powder, sugar, baking powder, and salt until no cocoa lumps remain and the mixture looks uniform.
  2. Pour in the milk, oil, and vanilla. Stir with your fork until you have a smooth, thick batter, scraping the bottom and sides of the mug to catch any hidden pockets of dry ingredients.
  3. Dollop the peanut butter into the center of the batter, then gently press it down so it sinks slightly but stays mostly in the middle - this creates a molten peanut butter core.
Microwave
  1. Microwave on high for 60-70 seconds. The cake will rise dramatically and then settle; it's done when the top looks set and springs back when lightly touched. Do not overcook or it turns rubbery. Let cool for 2 minutes before eating - the center stays molten hot.

Notes

For extra decadence, add a handful of chocolate chips to the batter before microwaving. If your peanut butter is cold from the fridge, microwave it for 10 seconds first so it sinks properly. This doubles poorly - make two separate mugs rather than one large one, as the center won't cook through evenly.