Kirbie's Cravings

One Minute Brownie Mug Cake

photo of a spoonful of brownie cake
Yes, that’s right. I created a brownie mug cake that takes only one minute to make in the microwave. I have to confess, I’m pretty thrilled. This is my favorite mug cake creation yet. And it is still super easy to make.

It’s super chocolatey like a brownie should be. This is more like the cake-type brownies rather than the chewy brownies, but it’s still so good. When it first came out of the oven, the brownie was quite fluffy, like a really good chocolate cake. After a minute or so, the batter turns denser, much more like a brownie because of the minimal amount of flour.

close-up photo of a spoonful of cake
I made two, offered one to the FH. At first he refused. He’s gotten kind of sick of my mug cake creations. I insisted he take a bite and he didn’t regret it. He loved it and kept the brownie for himself.

Brownie mug cake

Because brownies are denser, these don’t rise nearly as much and you don’t need an oversized mug unless you want to double the quantity. A regular mug will do.

There’s one extra step required to create these cakes, but it’s still super easy and clean up is still minimal.
close-up photo of a spoonful of brownie cake

One minute Brownie mug cake

Servings: 2
Prep Time: 10 minutes
Cook Time: 1 minute
Total Time: 11 minutes
Course: Dessert
Cuisine: American
You don't need to wait to bite into a warm homemade brownie. This brownie-in-a-mug takes just minutes to make and is a chocolatey treat for two.
4.8 from 5 votes


  • 2 oz semisweet chocolate chips or chopped chocolate
  • 2 tbsp unsalted butter
  • 1 egg
  • 4 tbsp sugar
  • 2 tbsp flour


  • Select two microwave-safe mugs. In each mug place one tbsp of butter and 1 oz of semisweet chocolate. Microwave each mug for 40 seconds (microwave them separately). Remove and stir until chocolate is completely melted with a small fork.
  • Add 2 tbsp sugar to each mug and stir. Beat egg in a small bowl, add half to each mug and mix. Add in 1 tbsp flour to each cup and mix until smooth.
  • Cook each brownie for 1 minute in the microwave (do each separately). Serve while warm.

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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110 comments on “One Minute Brownie Mug Cake”

  1. Soooooo good!

  2. Hi! I’m not sure what I’m doing wrong, I made the recipe, I put everything in 1 mug (a bigger one) and then put it in the microwave for 2 mins. It came out really wet and sticky. Do I leave it in for longer? Bacause last time I did that, it came out all rubbery. 🙁

    • This recipe is designed for 2 individual cakes. You should divide the batter into two mugs as stated in the instructions and cook each separately. Adding them all into one will make the batter too dense when it is fully cooked.

  3. Definitely the best mug brownie I’ve made! Is it possible to make this without self-raising flour? That’s what I’ve been using.

  4. loved this recipe!! delicious, easy and overall just simply amazing! 100 % would recomend.

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