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Heavenly Peanut Butter Chocolate Brownie in a Mug ( The Perfect Snack for One)

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My son and I had a debate the other night. He thinks that peanut butter and chocolate don’t belong together. I am questioning if he is really my son. Is there anything better than peanut butter and chocolate together? Ok, maybe those newish Reese’s with Reese’s pieces in them… peanut butter and chocolate and candy and more peanut butter. Oh my glob yes.

This brownie for one fits the bill as one of the most heavenly desserts I’ve had in a long time. Peanut butter and soft brownie together. I’m in love Y’all. I should call them Fallon brownies because this has been my go-to snack for mommy time (aka leave me alone I’m watching Jimmy Fallon).

It says brownie for one but it’s really enough for two….but who wants to share something this good? My family are on their own on this one.

( Not a chocolate fan? No worries I boo I’ve got you! Check out my blueberry bliss muffin in a mug)

A Snack for Anyone

A good thing about single serving treats is that you can alter them for just about anyone. Looking for something a little healthier? Substitute the cocoa for a protein powder. Not a fan of peanut butter ( you monster, you) try it with strawberry sauce or even caramel!

They can be altered for just about any food allergies that may be present in your family as well. They are already dairy free and vegetarian. They can be made gluten-free by altering the flour. As always with our recipes here at Ghastly Girl, organic sugar is recommended to help make this treat a little healthier.

Peanut Butter Chocolate Brownies for One

Mug brownies are just about one of the easiest snacks you can make for yourself. In just a few simple steps and ingredients just about everyone has around the house you can be in brownie heaven in no time.

Peanut Butter Chocolate Brownie in a Mug

Peanut Butter Chocolate Brownie in a Mug


  • 4T sugar
  • 4T flour
  • 2T cocoa powder
  • 2T oil
  • 2T water
  • 1/2 tsp vanilla
  • powdered sugar for sprinkling


  1. Pick your absolute favorite mug
  2. Mix ingredients in mug ( except for powdered sugar)
  3. Microwave 1 minute 20 seconds
  4. Enjoy!

Share Your Creations

If you gave this recipe a try drop us a comment and let us know how you made yours! What add-ins did you use? Did you top it with sprinkles? ( Pro Tip: These are awesome with sprinkles!)

We love to hear from you guys and see what you come up with in the kitchen!

Happy Baking!


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Our peanut butter and chocolate brownie in a mug is the perfect single serving treat. #mugbrownie #peanutbutterandchocolate #bakingforone
These delicious peanut butter chocolate brownies are the perfect snack for one!
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Blogger at Ghastly Girl
Ghastly is a paranormal historian living in Arkansas. She writes on mental health, chronic illness, crafting (or at least trying to), and her love of cupcakes when she isn't herding cats or homeschooling her special needs daughter.
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