Brownie in a Mug

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

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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.

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!

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 8 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 or vegetable oil (NOT extra virgin olive oil, it's too strongly flavored)
  • 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

Showing 4 of 400 Comments

  • Poppy

    I’ve made this 3x this week it’s so good. I left out the cinnamon and added instant coffee granules. I love gooey/fudgy brownies and this was is it.

  • Alex

    For even richer chocolate flavor use brewed coffee in place of the water.

  • Missy Stevenson

    7 months pregnant in July – wanted brownies :) no 8*8 pan and my bigger one was holding leftovers. The brownie thirst was STRONG!! Happened to stumble upon this recipe and threw it together. I used coconut oil though. Threw some sliced almonds and flaked coconut in it….AMAZING and perfect!! AND (my favorite) no leftovers to munch on or for bigger kids (or hubby) to steal

  • Sydney Harold Letz III

    I have made this twice and I liked it both times, but my friend liked it the first time and not the second so I am trying to see what I may have done differently. What would happen if I add a little too much oil? a little too much chocolate? a little too much flour? a little too much vanilla? a little too much or too little water? it was mushy in one of the two mugs. Also does a wide mug come out different from a standard mug? Thank you for taking the time to respond and for the wonderful recipe. Do you have a recipe page?

  • Susan

    I made these with my granddaughter tonight for the family and they loved it! We added touches to each one to match their tastes ( peanut butter, instant coffee, m & m’s etc). Fun thing to do with your little helpers.

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