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


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.

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

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 383 Comments

  • Lily Jenkins

    I don’t know where all the bad comments are coming from, this was the first mug cake i tried and the only one that has worked for me!

  • Trudy T

    Yumm…I just finished scraping my bowl. So…I followed the recipe exactly but made 3 substitutions:

    I used soy flour
    I used splenda sugar blend ( only needed 2 tbsp to be equivalent to 1/4 sugar)
    I used soy milk (instead of the water)

    I microwaved it for 1 minute & 10 seconds and it was PERFECT.

    I’m thinking next time to use half protein powder and half soy flour. I’m trying to make it as low carb as possible.

  • Lauren

    I mad it exactly the way the recipe called for, and it turned out amazing!! I put two scoops of ice cream on top too and it just added to the creamy texture of the brownie!! So thankful for the recipe

  • Xan

    Scrumptious to distraction… albeit with a few modifications:
    – used spelt flour,
    – replaced cocoa with cacao,
    – substituted water with milk,
    – replaced recipe’s oil w/coconut oil,
    – replaced sugar with seville orange syrup; next time will try maple syrup,
    – added 1/2 egg (reconstituted from powder)

    My post-prandial delight was never this good.
    Thanks for the inspiring recipe.

  • Robert

    Followed recipe exactly…1m 20s in microwave. It was gummy in texture, and kinda bland. Not worth the time or calories.

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