Kirbie's Cravings

One Minute Peanut Butter Chocolate Mug Cake

A chocolate peanut butter mug cake that takes just a few minutes to make and cooks in the microwave. This is a great way to treat yourself when you’re craving something sweet.

overhead photo of a Peanut Butter Chocolate Mug Cake

I love mug cakes. They are so easy to make and require very little clean-up.  It takes a few minutes to put together and only about 1 minute of cooking time. Whenever I’m craving a sweet treat for one, I turn to a mug cake.

The other day I experimented with some other flavor mug cakes. So far I’ve made nutella chocolate mug cake and chocolate mug cake. I set about trying to make a peanut butter chocolate one.

close-up photo of a spoonful of cakeIngredients

  • All-purpose flour
  • White granulated sugar
  • Baking powder
  • Egg
  • Cocoa powder
  • Peanut butter
  • Milk
  • Melted butter

Recipe Steps

Whisk all of the ingredients in a large mug.

Microwave the mug cake on high for about 1 to 1 1/2 minutes. You don’t want to overcook it or it will become rubbery.

Let it cool off before enjoying.

The cake came out a little bit dryer than I had been expecting and the peanut butter flavor wasn’t intense enough for my personal preference. It was still a tasty cake though and really hit the spot. Next time I think I might not mix the peanut butter into the batter, but instead swirl it in.

Peanut Butter Chocolate Mug Cake

More Chocolate Mug Cake Recipes

Peanut Butter Chocolate Mug Cake

Servings: 1
Prep Time: 4 minutes
Cook Time: 1 minute
Total Time: 5 minutes
Course: Dessert
Cuisine: American
Chocolate and peanut butter is a great combo and you only need a few minutes to combine them in an easy-to-make mug cake!


  • 4 tbsp all purpose flour
  • 4 tbsp white granulated sugar
  • 1/4 tsp baking powder
  • 1 egg
  • 3 tbsp cocoa powder
  • 2 tbsp peanut butter
  • 3 tbsp milk
  • 3 tbsp melted butter


  • Combine all ingredients in an oversized mug. Whisk well with a fork until smooth. 
  • Microwave on high for about 1 to 1 1/2 minutes. You don’t want to overcook it or it will become rubbery.


Recipe adapted from The Family Kitchen

The nutrition information provided are only estimates based on an online nutritional calculator. I am not a certified nutritionist. Please consult a professional nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.

Did you make this recipe?I'd love to see it! Mention @KirbieCravings and tag #kirbiecravings!

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Recipe Rating

24 comments on “One Minute Peanut Butter Chocolate Mug Cake”

  1. Love the mug cakes! Love peanut butter cake. Here is the dry cake solve: No egg. No butter. 3 tablespoons applesauce, 1 tablespoon oil, 3 tablespoons melted peanut butter. 2 tablespoons packed cocoa powder and 5 tablespoons ap flour. Then follow the rest of your recipe. *spray  inside of coffee mug with non-stick spray and mix batter in small bowl first.*

    • thanks for sharing. this is actually quite an old recipe. I’ve definitely figured things out since. If you look through my mug cakes category you’ll find my updated recipes where I’ve solved a lot of previous issues.

  2. This was fantastic! I added about a quarter teaspoon of vanilla and a pinch of salt, and used half brown sugar and half white. I think next time I may reduce the quantities slightly because it turned out being more like two servings of cake than like one, but it was delicious.

  3. I put the peanut butter on the bottom instead of in it and it melted all over when fljpped upside down YUMMY!!!!!

  4. I just made this, minuses the sugar as I’m diabetic and used 3 table spoons of Splenda. I also added a dash of cinamon and vanilla and ate it with a small scoop of sugar free vanilla icecream. Perfect snack!

  5. I just made this, we didn’t have enough cocoa to put cocoa in it, and we didn’t have baking powder, it works just as well replacing the flour and baking soda with four tablespoons of self raising flour. It is so tasty!

  6. This was super easy and very yummy. I didn’t have any milk so I just used water and it came out perfect! So happy I found this site with it’s different takes on the mug cake, will definitely be trying the other variations in the future.

  7. It didn’t fit in my mug, but it tasted amazing.

  8. This is delicious! I made it and it was just a little undercooked so it was moist and chewy! yum!

  9. I know that it’s weird but I don’t have a mirowave so I only can use oven. Do you think that it could work?

  10. I do something similar with protein powder and peanut butter – probably doesn’t taste nearly as good though 😀

  11. Looks great and sounds really easy but I don’t envy the person that has to wash that mug. It must stick something awful.

    • It’s actually not too bad. If you wash it after you are done and use the scrub portion of the sponge it comes off pretty easily.

  12. What a cool idea! I’ve never tried making a mug cake before, but it’s hard to go wrong with anything that has cocoa powder and peanut butter in it. Do you think you could use oil instead of melted butter in this recipe?