Peanut Butter Brownies

These Peanut Butter Brownies are perfectly soft, chewy and full of peanut butter flavor! The frosting is just amazing and can be used on many different desserts.

Peanut Butter Brownies on Mandy's Recipe Box

Hey there! Mandy from Mandy’s Recipe Box here today! I seriously have the best brownie recipe ever, right here. That’s a huge statement that I don’t say lightly. It’s absolutely true. I don’t love regular brownies. I will eat them here or there, but I won’t seek them out that’s for sure. Go ahead and say it: Weirdo. But these Peanut Butter Brownies, you guys. I made them first thing in the morning and after one bite, they totally became my breakfast. No joke. The frosting is so light and fluffy that you can eat it with a spoon. These aren’t rich at all. Good luck having any leftovers after serving these!

Peanut Butter Brownies by Mandy's Recipe Box

Peanut Butter Brownies
Prep time
Cook time
Total time
Recipe type: Dessert
Cuisine: American
Serves: 16
  • Brownie Ingredients:
  • 1 cup creamy peanut butter
  • ½ cup butter, softened
  • 2 cups brown sugar, packed
  • 3 eggs
  • 1 tsp. vanilla extract
  • 1 cup all-purpose flour
  • ½ tsp. salt
  • Peanut Butter Frosting:
  • 2 cups creamy peanut butter
  • 1 cup butter, softened
  • 1 tsp. vanilla extract
  • ⅛ tsp. salt
  • 3 to 4 Tbsp. heavy cream or milk
  • 2 cups powdered sugar
  1. In a large bowl or the bowl of your stand mixer, beat together the peanut butter and butter.
  2. Add in brown sugar, eggs and vanilla; beat until light and fluffy.
  3. Add in the flour and salt; mix well.
  4. Spread into a 9x13 pan that's been greased or lined with foil.
  5. Bake at 350 degrees for 30-35 minutes.
  6. Cool in pan; frost with Peanut Butter Frosting.
  7. Peanut Butter Frosting:
  8. Blend peanut butter and butter together until light and fluffy.
  9. Add the remaining ingredients and mix until smooth.

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This awesome post has been shared with Home Stories A to Z and Living Well Spending Less.


  1. hello
    i was just wondering if i could make this with crunchy peanut butter?
    thank you

  2. Thank you Debbie.
    Im not a risk taker at least until ive done something by the rules the first time. I am not good at all at judging or eyeballing.
    might try this tonight
    thanks again

  3. These look and sound amazing! I can’t wait to try them. Thanks for sharing! Drool worth for sure!

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