Peanut Butter Swirl Chocolate Banana Mug Cake is the ultimate quick treat for chocolate and peanut butter lovers! This easy recipe comes together in minutes and can be made in the microwave or oven. Perfect for breakfast, dessert, or a cozy snack, it’s moist, gooey, and packed with rich banana flavor, melty chocolate, and creamy peanut butter swirls.
Ingredients
- 1 ripe banana (medium, mashed)
- 3 tablespoons all-purpose flour
- 2 tablespoons unsweetened cocoa powder
- 2 tablespoons brown sugar (or granulated sugar)
- 1/4 teaspoon baking powder
- Pinch of salt
- 1 large egg
- 2 tablespoons milk (any kind)
- 1 tablespoon vegetable oil (or melted butter)
- 2 tablespoons creamy peanut butter
- 1/4 teaspoon vanilla extract
- 2 tablespoons chocolate chips (optional)
Instructions
- Prepare the Mug or Ramekin: Lightly grease a large microwave-safe mug (12–14 oz) or an oven-safe ramekin with oil or nonstick spray.
- Mix the Batter: In the mug or a small bowl, mash the banana until smooth. Add the flour, cocoa powder, sugar, baking powder, and salt. Stir to combine. Add the egg, milk, oil, and vanilla extract. Mix until just combined (don’t overmix). Stir in chocolate chips if using.
- Swirl in Peanut Butter: Drop the peanut butter by spoonfuls on top of the batter. Use a knife or skewer to gently swirl the peanut butter into the batter for a marbled effect.
- Cooking Options:
- Microwave Method: Microwave on high for 1 minute 30 seconds to 2 minutes, or until the cake has risen and is just set in the center. (Microwave times may vary—check at 1:30 and add 10-second intervals as needed.) Let cool for 1–2 minutes before eating.
- Oven Method: Preheat oven to 350°F (175°C). Bake for 18–22 minutes, or until a toothpick inserted in the center comes out mostly clean. Let cool slightly before enjoying.
Tips
- For extra gooeyness, add a few more chocolate chips on top before cooking.
- Use natural peanut butter for a less sweet, more nutty flavor.
- For a vegan version, use a flax egg, plant-based milk, and vegan chocolate chips.
FAQ
Can I use almond butter instead of peanut butter?
Yes! Any nut or seed butter works.
Can I make this gluten-free?
Yes, substitute a 1:1 gluten-free flour blend for the all-purpose flour.
How ripe should the banana be?
The riper, the better—brown spots mean more sweetness and flavor.
Looking for more quick desserts? Try our Blue Lemonade Fudge or Reese’s Peanut Butter Cup Cupcakes!
