Introduction: Peanut Butter Brownie in a Mug!

Picture of Peanut Butter Brownie in a Mug!

Craving a midnight snack or a treat to satisfy your sweet tooth? Well then this is the perfect recipe for you! It takes less than 10 minutes, it's really easy, doesn't make a big mess, and is super delicious! Try out this peanut butter brownie in a mug!

Step 1: Gather Materials

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  • 4 Tablespoon flour
  • 5 Tablespoon sugar
  • 1 Tablespoon cocoa
  • a small pinch of salt
  • 1 egg
  • 3 Tablespoon milk
  • 3 Tablespoon vegetable oil
  • 3 Tablespoon peanut butter


  • 1 bowl
  • 1 fork
  • 1 mug (microwavable safe)
  • 1 plate (microwavable safe)
  • Microwave (700watts)
  • 1 rubber pot holder

Step 2: Mix Dry Ingredients

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Combine the flour (4 tbsp), sugar (5 tbsp), cocoa (1 tbsp), and salt (a small pinch) into the mug. Mix well

Step 3: Add in Wet Ingredients

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Add in the egg (1), milk (3 tbsp), and vegetable oil (3 tbsp). Mix until smooth

Step 4: Measure the Peanut Butter

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In a separate bowl, add in the peanut butter (3 tbsp)

Step 5: Melt the Peanut Butter

Microwave the bowl of peanut butter for 30 seconds then stir until smooth

*Note - We used a 700 wattage microwave. If your microwave is different in wattage, use the conversion chart here to find the amount of time you should microwave the peanut butter.

Step 6: Pour the Peanut Butter

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Pour peanut butter into the mug

Step 7: Mixing Peanut Butter and Brownie

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Lightly mix peanut butter into the brownie mix.

(so that the peanut butter goes throughout the cake from bottom to top)

Do not mix the peanut butter in completely

Step 8: Microwave

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Put mug on the plate in the microwave. Microwave for 3 minutes

*Note - We used a 700 wattage microwave. If your microwave is different in wattage, use the conversion chart here to find the amount of time you should microwave your peanut butter brownie.

Step 9: Remove From Microwave

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When it’s done, remove the mug with the rubber pot holder

Caution: it will be hot!

Step 10: Let Cool, Then Enjoy!

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Wait 2 minutes for brownie to cool. Enjoy!


EricSt made it! (author)2016-04-16

Perfect last minute sweet fix... and I used a room temperature natural peanut butter so didn't even need to nuke it first.

srubiki made it! (author)2015-05-21

it was good, i put some chocolate chips in mine before i put it in the microwave

Holla die Waldfee (author)2015-04-29

This looks really good and I really want to try it, but I have a small problem:

Please correct me, if I'm wrong, but you have almost 20 tablespoons worth of dough for just one cup - this seems rather a lot. Just how bit is the cup you are using? I would think that this amound of dough would suffice for at least three standard (200ml) cups worth of cake, am I wrong?

Also the 3 minutes of microwave time suggest a rather big brownie.

Could you maybe tell me the size of your cup, so that I can adapt the recipe to my hunger-/cup-size?

Looking at the pictures, I think it's safe to assume that the mug is rather large. It looks almost as tall as the peanut butter jar and much wider.

Gmastefluffy (author)2015-04-29

It was too big for my mug, but was still very tasty.

Protip: if you want to turn it into a pudding, cook it for about half the time, then pour milk over the cake.

gingerin (author)2015-04-29

doest look as good though

gingerin made it! (author)2015-04-29

tastes great

cplace1 (author)2015-04-28


suzysmith24 (author)2015-04-28

oohh myyy gooooodddd!!!!i have got to try this!instructable,ur going to my favourites!

BayRatt (author)2015-04-27

Oooooo!! Wish I'd found this a couple hours ago!

seamster (author)2015-04-27

This looks excellent. Gonna try it tonight, thanks!

About This Instructable




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