Brownie in a Mug

Kid-friendlyMicrowaveQuick and EasyChocolate

Easiest brownie ever! Single serving brownie microwaved in a mug. Takes 5 minutes to make.

Photography Credit: Elise Bauer

Oh my. We’re doomed. My young friends Reilly and Alden just showed me how they make single serving brownies, in a mug, in a microwave. Takes 5 minutes.

We did experiment a bit. Turns out that you really should not use extra virgin olive oil for this recipe, it’s too strongly flavored. A neutral oil or melted butter work best.

A pinch of salt helps make the chocolate more chocolate-y. I’ve added some vanilla and a tiny bit of cinnamon; you could also add a speck of instant coffee to take it up a notch.

Mug Brownie

The brownie lacks for structure (no egg) but that’s okay because it’s contained by the mug. When it’s done, it’s HOT. Perfect for topping with a little vanilla ice cream or whipping cream.

The trick is getting the cooking time right for your microwave. Every microwave oven model is different.

One 1000 watt microwave we tested cooked these brownies in a mug perfectly at a minute 40 seconds. Our 1650 watt microwave cooked them in 1 min 10 seconds. So you may need to adjust the time to get the brownie to cook properly with your microwave.

Enjoy!

I made a quick little video to show how to make the mug brownie, check it out!

How to make the best mug brownie

Brownie in a Mug Recipe

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  • Prep time: 3 minutes
  • Cook time: 2 minutes
  • Yield: Makes one serving

Some mugs don't microwave well because there is metal in their ceramic glaze. They'll work but they may get very hot. Best to use a plain old everyday un-fancy mug. A regular 12 to 16 ounce mug will do fine.

Ingredients

  • 1/4 cup flour (30 g)
  • 1/4 cup sugar (50 g)
  • 2 Tbsp (13 g) cocoa (natural, unsweetened)
  • Pinch of salt
  • Tiny pinch of cinnamon
  • 1/4 cup water (60 ml)
  • 2 Tbsp canola oil, vegetable oil, or melted butter
  • 1/8 teaspoon vanilla extract
  • 1 small scoop of ice cream or 1 or 2 teaspoons heavy whipping cream to serve

Method

1 Add the dry ingredients to the mug and stir: Place flour, sugar, cocoa, salt, and cinnamon in a microwave safe ceramic mug. Stir with a fork or spoon to mix well and break up any clumps.

2 Add the wet ingredients and stir: Add the oil, water, and vanilla to the cup and stir until the mixture is smooth and there are no lumps.

3 Zap in microwave: Place in microwave and heat on high until the mixture is cooked through, about a 1 minute and 40 seconds for a 1000 watt microwave, or 1 minute 10 seconds on a 1650 watt microwave.

You may have to experiment and adjust the time for less or more powerful microwaves. If you don't know the power level on your microwave, start with 60 seconds and increase until the brownie is done. It should still be moist when cooked through, not dry.

4 Top with ice cream! Let cool for a minute and serve with a scoop of vanilla ice cream or a teaspoon or two of whipping cream poured over.

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Piper and Alden eating mug brownies

Elise Bauer

Elise Bauer is the founder of Simply Recipes. Elise launched Simply Recipes in 2003 as a way to keep track of her family's recipes, and along the way grew it into one of the most popular cooking websites in the world. Elise is dedicated to helping home cooks be successful in the kitchen. Elise is a graduate of Stanford University, and lives in Sacramento, California.

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537 Comments / Reviews

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Did you make it? Rate it!

  1. Beth

    I love this! Quick and easy to cure a sweet craving!!!

    xxxxxyyyyy

  2. Jesse

    I have always used this recipe as I love love LOVE brownies once in a while. I will go on a sugar/sweet binge and this is a simple to follow recipe made with the ingredients in your home. I would trust my KID to make this by herself!!!! Its an awesome party fixing too with all the coffee mugs I have lying around! Eapecially on a cold day! Anyone that cant make this obviously didnt follow the instructions and it clearly states you may have to experiment with the time in the microwave if you dont know the microwaves watts. Im eating one of these vhocolate bad boys NOW covered with powdered sugar!!!!!!

  3. Emily

    Loved it! Was so chocolatey and deliocous. I do recommend putting about a teaspoon of espresso powder in the brownie mix to bring out even more chocolaty flavors. Great recipe!

    xxxxxyyyyy

  4. Kaitlyn

    It was a doughish texture and did not taste good at all. When I was done with the mixture I put it in the microwave for the suggest time and when I saw it hadn’t fully cooked more time and it end up being burn in the middle and gooey on the outer side.
    Do not reccomened.

    xxxxxyyyyy

  5. Joice Cypriano

    I modified a couple of things. I added about 1 tsp of sour cream, about 1/4 tsp baking soda, some chopped pecans and dark chocolate chips. Served with bourbon vanila ice-cream. It was a super hit!

    xxxxxyyyyy

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