When I’m craving something sweet, warm, and just for me, this peanut butter chocolate chip mug cake is my go-to. It’s the perfect single-serve treat with a soft, fluffy crumb, packed with rich peanut butter flavor and melty chocolate chips in every bite. Best of all, this easy peanut butter mug cake comes together in my microwave in under 10 minutes!
Microwave Peanut Butter Cake
Making a chocolate mug cake is one of my absolute favorite simple indulgences when my kids are out of the house. And now this peanut butter mug cake is quickly climbing the ranks! Made with creamy peanut butter and gooey chocolate chips, it tastes just like a warm peanut butter cup in a mug.
I love how this chocolate chip peanut butter mug cake comes together with simple pantry staples in under 10 minutes. It’s perfect when I want a cozy, single-serve treat without the fuss of baking a full cake. The rich peanut butter base, melty chocolate chips, and soft, fluffy texture make this cake in a mug an instant favorite. Warning: you’re going to want to make this quick dessert after dinner every night!
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Avoid Dry Spots!
Make sure to mix your mug cake batter thoroughly to ensure there are no dry pockets of flour. The microwave cooks fast, so even distribution gives you that perfectly soft and fluffy crumb.
Peanut Butter Chocolate Chip Mug Cake Recipe
Equipment
- 12-ounce Microwave-Safe Mug
Ingredients
- ¼ cup all-purpose flour
- ¼ teaspoon baking powder
- 1 tablespoon brown sugar
- ¼ cup milk
- ¼ cup creamy peanut butter *
- 2 tablespoons milk chocolate chips **
Instructions
- Add all ingredients to a 12-ounce microwave-safe mug.¼ cup all-purpose flour, ¼ teaspoon baking powder, 1 tablespoon brown sugar, ¼ cup milk, ¼ cup creamy peanut butter, 2 tablespoons milk chocolate chips
- Using a fork or small whisk, mix well until the batter is uniform.
- If you desire, sprinkle a few more chocolate chips on top.
- Microwave for 2 minutes, or until the center is cooked through.
- Allow cake to cool a few minutes before enjoying.
Notes
- Grease your mug before adding the ingredients so that it doesn’t stick.
- Make sure you use a microwaveable mug in this recipe.
- Don’t fill the mug all the way to the top, as the batter will rise as it cooks. Place a plate under your mug in case there is any spillage.
- Microwave wattages can vary a lot! If your cake is underdone in 2 minutes, try 15-second bursts until just cooked through. Avoid overcooking to keep it soft and moist.
- Use your fingertips to test the top of the cake; if it’s a little sticky, it’s perfectly cooked through and ready to eat.
- Make this mug cake gluten-free by using 1:1 gluten free flour alternative.
- Let cool slightly before enjoying.
How to Make a Peanut Butter Cake in a Mug Step-by-Step
Prep: Gather the short list of ingredients for this mug cake recipe. Spray the inside of a 12-ounce microwave-safe coffee mug with nonstick spray, or lightly coat it with melted butter or neutral oil.
Mix the Batter: Add ¼ cup of all-purpose flour, ¼ teaspoon of baking powder, 1 tablespoon of brown sugar, ¼ cup of milk, ¼ cup of creamy peanut butter, and 2 tablespoons of milk chocolate chips to a 12-ounce microwave-safe mug.
Stir it Up: Mix well with a fork or small whisk until the batter is uniform. Feel free to sprinkle a few more chocolate chips on top.
Microwave the Cake: Microwave for 1-2 minutes, or until the center is cooked through. Allow your peanut butter mug cake to cool for a few minutes before enjoying.
How to Store
I doubt you’ll have leftovers of this single-serving cake, but just in case you do, here’s how to store them! Tightly wrap the mug with plastic wrap and place it in the refrigerator for up to 3 days. Enjoy this peanut butter chocolate chip mug cake cold, at room temperature, or warmed for 15 seconds in the microwave.
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