Microwave Chocolate Mug Brownie

"This makes a delicious brownie for one in about a minute. 60 seconds makes a molten center brownie. 75 seconds make a uniformly done brownie. Be careful not to overcook."
photo by Izy Hossack photo by Izy Hossack
photo by Izy Hossack
photo by Alex B. photo by Alex B.
photo by Taylor H. photo by Taylor H.
photo by emili.shiraiwa photo by emili.shiraiwa
photo by Aimee A. photo by Aimee A.
Ready In:
1 brownie




  • In a coffee mug, add water/milk, melted butter/oil, a dash of salt and vanilla extract. Whisk well.
  • Add cocoa powder, whisk well. Add sugar, whisk well. Add flour, whisk well.
  • Microwave for 60 seconds. Center should be slightly molten. Careful not to overcook.
  • Enjoy with a spoon. Careful, brownie will be hot.

Questions & Replies

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  1. Diane J.
    how to delete a receipe
  2. Jenna W.
    How did they come up with this idea
  3. Christian M.
    Definitely gonna need to add some more milk but 10/10 amazing and easy recipe.
  4. clmortenson
    Really rather sceptical that it's actually 442 calories. Even if you put the entire 2 tablespoons of butter that in itself would only be 180. 2 tablespoons sugar 90. Just saying....
  5. Kashaf Z.
    How long should I bake this in an oven?


  1. keptinmylocket
    This is 5 stars with these corrections: switch the water out for milk and decrease the sugar & flour to 2T each instead of 4T.
  2. Hannahamazesyou
    I'm leaving this review for the people who, like me, have searched through multiple brownie-in-a-mug recipes that ended up tasting like total dirt to find a good one. I have tried a handful of recipes that had good reviews and when they end up tasting like crap even though I followed the directions exactly, I wonder where I went wrong. This is FINALLY a decent recipe that actually tastes like a brownie and doesn't end up dry and bitter (but that can happen to any recipe if you microwave it too long, be wary). I think one of the secrets is to use melted butter instead of oil. It is essential to the way it cooks but doesn't give it an oily taste. If you don't like it to be too sweet, cut the sugar by a tablespoon or two. I also substituted milk for water, which I suggest doing in any cake/pancake/muffin recipe. I cooked it in a 1500 watt microwave for 60 seconds and it was just a bit too liquidy/molten for me so I gave it another 15 seconds and it was great. My end conclusion is that you're honestly just not going to be able to make a perfect tasting brownie like you would by baking a box mix in an oven for an hour by just throwing 5 or 6 ingredients in a mug and microwaving it for a minute, but that when you are craving a chocolate fix and want a decent brownie this recipe will definitely satisfy you! I really hope my review helps someone!
  3. Candypawz
    Yum!! I tried it by the recipe first, then made some alterations... I used self raising flour instead of plain. Also, I halved the sugar to 2Tbs but I used 1Tbs white sugar, 1Tbs brown sugar which made it nice & fudgy :-) Cooked for 60sec in 1200w microwave :-)
  4. steelshade
    A wonderful recipe! Make it a peanut butter chocolate brownie by replacing the butter with 1-1/2 Tbsp creamy peanut butter and increase water to 2-1/2 Tbsp. I also replace the water with milk and reduce sugar by half. Mix the peanut butter with the water (milk) until smooth before adding the rest. Comes out yummy and there is still about an inch and a half left in the 12 oz. mug for a bit of ice cream!
  5. HisPixie
    I needed something quick & easy that didn't require the oven on this hot summer Friday night. Just wanted a little end-of-the-work-week treat. This fit the bill! It would have been great with ice cream but I also had limited ingredients so, again, this worked nicely. I got a little confused because the recipe ingredients call for melted butter but there is no mention of it in the recipe...then I noticed the directions called for "oil" ... which translated to melted butter, although it's not the term I would have used. Thanks for posting!


  1. Izy Hossack
    Added chocolate chips to the batter before microwaving then topped with whipped cream and sprinkles
  2. ktomlin
    This is my go to chocolate mug brownie recipe! I have made this so many times. I have done some tweaks and trial and error and I finally have it down. I like how the original recipe doesn't have us dirtying a bunch of utensils! I use just the tablespoon and the 1/4 tsp, that it. Here are my to-taste tweaks: 2 tbsp of cocoa, a little less than 2 tbsp of sugar -save on cals lol, 4 tbsp flour, Dash Salt, A small dash of instant coffee - gives it complexity!, a generous sprinkling of cinnamon, 1/4 tsp baking powder - probably not technically a brownie at this point, 2 tbsp oil, 1/4 tsp vanilla extract, 4 tbsp almond milk, then I microwave for 70 seconds - Comes out perfect every time.
  3. oliviataylor
    I’ve been making this a lot recently and the more I make it, the more I tweak it. I use 3 1/2 tablespoons of milk and 3 1/2 tablespoons of sugar, this last time I added maybe a 1/2 teaspoon of chocolate syrup. Best one I’ve had yet!!
  4. Jen W.
    if you want to follow the exact recipe i advise more liquid and less solid. for flour loose a tablespoon and use milk instead of water and add another table spoon. also use honey instead of vanilla extract
  5. Lyndi W.
    I call it a 3 TBSP Mug Brownie. 3 tablespoons of all the above listed ingredients, except a dash of salt and vanilla extract. I also use milk instead of water. And using 3 tablespoons for everything gives you a very slightly larger batch so you need the microwave it all 90 seconds for a 1250w microwave.


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