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Chocolate brownie mug cake. A treat that you can make in your microwave in less than 1 minute! Doesn’t sound believable, does it? This mug brownie is fudgy, full of chocolate, and pairs amazingly with a vanilla bean ice cream scoop. Next time those brownie cravings hit, try this one out.

Chocolate brownie mug cake half eaten

I’m a chocolate lover for sure! I will take anything chocolate and devour it in .1 seconds. Whether it’s my Chocolate No Churn Ice Cream with Brownies or these wonderful Bakery Style Brownies With no Cocoa I’m always ready for dessert if it involves fudgy chocolate goodness.

The beauty of this specific brownie is that it can be made and enjoyed almost as soon as you get the craving. It takes 30 seconds to throw all the ingredients together and another 45 seconds to bake it, doesn’t get better than that.

This is my go to brownie mug cake recipe when I want a quick and easy chocolate fix.

I actually am obsessed with small batch recipes, you can actually find some awesome tips to make any recipe small batch here. But since I love small batch recipes so much, I decided to go the extra mile and make a small batch brownie recipe, or a single serve brownie recipe should I say for you guys ( and also for myself because let’s be honest, I have had this 3 nights in a row at this point)

So no leftovers, no messy dishes from the making process. This recipe can be made in a single mug with very few ingredients and very few dishes too.

Check out more brownie recipes here:

What’s so special about this brownie in a mug recipe?

This recipe is dear and near to my heart because:

  • It will be ready in about 1 minute.
  • Of so full of chocolate
  • Can be made at midnight for a dessert that can be enjoyed immediately
  • It’s a brownie recipe that makes just one serving
  • Can be perfectly cooked in the microwave
the best chocolate

Ingredients needed for this mug brownie

To make this chocolate mug brownie you need the following ingredients:

  • Butter- I use salted butter in this recipe but you can use any butter you have on hand! That’s the beauty of this mug brownie.
  • Semi sweet chocolate chips You can use either semi sweet chocolate chips or dark chocolate too.
  • Egg yolk– You will need one egg yolk from a large egg.
  • Brown sugar– Some light or dark brown sugar to make this brownie sweet, moist and fudgy.
  • Vanilla– The vanilla is optional but is strongly recommended.
  • Flour– All purpose flour is what I used here.
  • Extra chocolate chips and nuts to mix in the batter– This is optional, but you can add mix-ins to your brownies for a fancier dessert.

What size mug do I need for a mug brownie?

This recipe works best in a smaller mug. The one I used is from Ikea and can hold about 8 ounces or one cup. This brownie will look very small if you make it in a large mug but it will still taste the same!

The top of the brownie in a mug recipe with a vanilla bean ice cream scoop

Can I double this recipe?

You sure can! You can double the recipe in a small bowl then divide it between two mugs and bake in the microwave. The baking time might take a little longer if you are baking two mug brownies at a time though. So keep that in mind.

How to make a brownie mug cake?

  • First, start by melting the butter in the mug in the microwave. Add in the chocolate chips and stir until completely melted. Microwave the mixture as needed until the chocolate is completely melted.
Step by step image to make chocolate brownie mug cake
  • Add in the egg yolk, the brown sugar, and the vanilla if you’re using some and stir until incorporated, Add in the flour and stir one more time just until the flour disappears. At this point you can add the chocolate chips and gently stir to get them incorporated to skip this step.
  • Cook the brownie on high in the microwave for 45 seconds. Microwave temperatures vary so you can cook it for an additional 15 seconds if necessary.

Brownie add ins options:

This chocolate brownie mug cake is a super easy recipe to make when those brownie cravings hit, but no one said it had to be a plain boring brownie recipe. Here are a few things I like to do to make this mug brownie extra fancy:

  • Mix in chocolate chips- Extra chocolate never hurt nobody!
  • Mix in peanut butter chips– Make this a peanut butter brownie mug cake by adding peanut butter chips… So delicious.
  • Mix in nuts– I love a good brownie with nuts in it. Add 1 tbsp of chopped nuts to your brownie batter before you cook it in the microwave.
  • Make it a molten chocolate mug cake- Place a Lindt chocolate in the center on top of the brownie batter and cook in the microwave for the perfect melty center.
  • Top it with cream cheese frosting-
  • Top it with a scoop of ice cream
Single serve brownie recipe in the microwave

Can this mug brownie be made in advance?

Unfortunately, no. This brownie recipe is best when made and eaten right away. I mean it doesn’t take more than 5 minute to make it so you should have enough time to make it right as the craving for brownies hit.

The texture becomes different as this brownie cools down, so make sure to have your ice cream ready as soon as you pop this baby in the microwave to enjoy it right away.

Tips for making the best brownie in a mug:

  • Mix everything well, but don’t over mix the batter once you add in the flour.
  • You don’t need to grease your mug. The brownie will get a little stuck to the mug regardless. To clean it, just soak it with a little water and whatever brownie was stuck on the mug will wipe off easily.
  • This recipe is made for a medium sized mug so don’t be shocked if it doesn’t fill up a jumbo mug!
  • If you are making more than one brownie mug cake at a time, you will need to increase you microwave cook time by a little bit.
chocolate Brownie in a clear mug

If you enjoyed this easy chocolate brownie mug cake recipe make sure to give it a 5-star rating by clicking on the 5 stars under the title and description.

The top of the brownie in a mug recipe with a vanilla bean ice cream scoop
4.97 from 65 votes

Fudgy 1-minute brownie mug cake

This is the best single serve brownie mug cake ever. It is fudgy, comes together in 1 minute and tastes incredibly rich!
Prep: 1 minute
Cook: 1 minute
Total: 1 minute
Servings: 1 serving
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Ingredients  

  • 1 tbsp salted butter or use unsalted butter but add a pinch of salt to the recipe
  • 2 tbsp semi sweet chocolate chips
  • 1 egg yolk
  • 1 tbsp brown sugar & 1 teaspoon brown sugar
  • 1/8 tsp vanilla optional
  • 2 tbsp flour
  • 1 tbsp chocolate chips optional

Instructions 

  • First, start by melting the butter in the mug in the microwave. Add in the chocolate chips and stir until completely melted. Microwave the mixture as needed until the chocolate is completely melted.
    1 tbsp salted butter, 2 tbsp semi sweet chocolate chips
  • Add in the egg yolk, the brown sugar, and the vanilla if you're using some and stir until incorporated, Add in the flour and stir one more time just until the flour disappears. At this point you can add the chocolate chips and gently stir to get them incorporated to skip this step.
    1 egg yolk, 1 tbsp brown sugar & 1 teaspoon brown sugar, 1/8 tsp vanilla, 2 tbsp flour, 1 tbsp chocolate chips
  • Cook the brownie on high in the microwave for 45 seconds. Microwave temperatures vary so you can cook it for an additional 15 seconds if necessary.

Notes

The nutritional value was calculated without the added chocolate chips in the batter because I didn’t add them to the recipe that I shot.ย 
ย 
This mug brownie recipe is best eaten as soon as you make it because it tends to harden as it sits.ย 

Nutrition

Calories: 457Calories | Carbohydrates: 46g | Protein: 6g | Fat: 28g | Saturated Fat: 11g | Cholesterol: 197mg | Sodium: 149mg | Potassium: 170mg | Fiber: 3g | Sugar: 29g | Vitamin A: 760IU | Calcium: 57mg | Iron: 3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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About Chahinez

Chahinez Tabet Aoul is the recipe developer, photographer, and writer behind Lifestyle of a Foodie and Simple Copycat Recipes. Based in Las Vegas, Nevada, Chahinez is known for creating approachable, high-reward recipes that feel like they came straight from your favorite restaurant. Only easier, more fun, and made right a thome!

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4.97 from 65 votes (49 ratings without comment)

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Recipe Rating




39 Comments

  1. Kai says:

    5 stars
    I usually don’t leave comments on recipes, but this brownie is sooo good! It was the only recipe I could find online that didn’t require cocoa powder. I used milk chocolate and was quite pleased with the results, although next time I make it I think I’ll opt for semi-sweet or dark chocolate. Will definitely be making again ๐Ÿ˜

    1. Chahinez says:

      That’s wonderful to hear! Using milk chocolate must have given the brownies a deliciously rich flavor. Switching to semi-sweet or dark chocolate could add a deeper, more intense chocolate flavor. I’m glad you enjoyed the recipe, and I’m sure they’ll be just as delicious with your next chocolate choice!

  2. Sara says:

    5 stars
    Someone had toโ€ฆ so, I substituted applesauce for the butter, Splenda brown sugar, and whole wheat flour. Doubled the recipe and used a (very) small glass loaf pan. It was soooooo good! Next time Iโ€™ll add some cocoa too! Just sharing if anyone wants to try a lower fat higher fiber version.

    1. Chahinez says:

      Love that!

  3. mmmhm delicious says:

    5 stars
    Actually tastes like a brownie! Only mug cake ill be eating for a while.

    1. Chahinez says:

      YAY!

    2. Chesse goblin says:

      5 stars
      a mug cake I didn’t need to force myself to enjoy

      1. carlson3794 says:

        I’m so glad you enjoyed it!

  4. Raidon says:

    5 stars
    I added some peanut butter to the middle before microwaving, it is amazing!!

    1. Chahinez says:

      This sounds so good! I need to try it!!

  5. Michael says:

    5 stars
    I made this, but used sugar-free semisweet chocolate and sweetener, as well as whole wheat flour. It came out amazing! It would be even better with some ice cream.

    1. Chahinez says:

      Yay! Glad to hear you enjoyed the recipe Michael!

  6. Erin says:

    5 stars
    love this recipe! made it with gluten free flour and it was still great, thank you for sharing this!

    1. carlson3794 says:

      You’re very welcome! So glad you enjoyed it ๐Ÿ™‚
      Chahinez

  7. Evan says:

    4 stars
    These things are incredibly rich in a way that is almost overpowering. I used the optional additional chips definitely would not use them if I make this again.

    1. Chahinez says:

      Yes! Brownies can definitely be very rich but using less chocolate chips would help you with that ๐Ÿ™‚

    2. Lili says:

      5 stars
      my new standard is that if there isn’t some tart in the comments complaining that the brownie recipe is too fudgy, I don’t want it ๐Ÿ’€

  8. Amanda says:

    5 stars
    I just made this and it was delicious! I used a dark chocolate Ghirardelli square-so yummy. The perfect brownie, really. Ty so much for sharing!

    1. Chahinez says:

      That sounds AMAZING!

  9. Ruveen says:

    I made my brownie wrong by not mixing before adding flour, then, I added an egg and it looked even worse. MY brother said the brownie he made tasted good, but when he tasted mine he said it was bad. And to top it all of, I dropped the cup my brownie was in and the cup and the brownie was destroyed. I will make your recipe again and it hopefully wont be a disaster like the one I just made.

    1. Chahinez says:

      Oh no!! I’m so sorry to hear that! Make sure to follow the directions exactly next time and I hope it turns out better next time ๐Ÿ™‚
      Chahinez

  10. Cindy says:

    I had to spend the holiday alone this year and this single serve brownie recipe was my best friend! It’s so comforting and tastes amazing. We’ll be making it every time I crave brownies.

    1. Lifestyle of a Foodie says:

      Awh! I love this ๐Ÿ™‚ Sending so much love your way.
      Happy Monday and thanks for sharing.
      Chahinez