Brownie in a Mug

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. Corn oil or canola oil 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.

Our 1000 watt microwave cooked these brownies in a mug perfectly at a minute 40 seconds. If you have a stronger microwave it will likely take less time. Enjoy!


Brownie in a Mug Recipe

  • 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.


  • 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 or vegetable oil (NOT extra virgin olive oil, it's too strongly flavored)
  • 1 to 2 drops vanilla extract
  • 1 small scoop of ice cream or 1 or 2 teaspoons heavy whipping cream to serve


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1 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.

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

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3 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. 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 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

Showing 4 of 343 Comments

  • Lily

    I dont know what all the bad comments are about your recipie is grat i add pretzle bits and hershey hot fudge sauce

  • Jill

    I did everything exactly like the recipe said and mine turned out horrible! Butter and icky!

  • Devon

    Wish I would’ve read the comments before making 2 batches of this but it was nasty. I used coconut oil instead of vegetable but I really don’t think that’d make such a huge difference, it just did not taste like a brownie AT ALL and made my mouth sad. Ended up throwing it out and now I gotta scrub it out of my mugs.

  • Piper

    I don’t know what to call this but brownie or lava cake is not even close to what came out as a result. It was like chocolate sand smooshed together. I followed the recipe. I’ve made cookie in a mug before and that was good, so I looked up to do a brownie. I don’t know what happened here but this was really gross.

  • Tara

    I dont know what happened, but I followed this recipe to a T – a TEE – but it never solidified. This nightmare was not the “lava cake” that people are commenting about but instead a volcano in my microwave. Do not recommend this recipe!!

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