Peanut Butter Brownie in a Mug!




Introduction: 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


  • 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

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

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

Step 4: Measure the Peanut Butter

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

Pour peanut butter into the mug

Step 7: Mixing Peanut Butter and Brownie

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

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

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

Caution: it will be hot!

Step 10: Let Cool, Then Enjoy!

Wait 2 minutes for brownie to cool. Enjoy!

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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?

vV Ajax Vv
vV Ajax Vv

Reply 6 years ago on Introduction

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.


6 years ago on Introduction

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.


6 years ago

doest look as good though


6 years ago



6 years ago

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


6 years ago on Introduction

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