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Rolo Marshmallow Peanut Butter Brownies

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Rolo Marshmallow Peanut Butter Brownies are the ultimate dessert with boxed brownie mix, rice krispies, candy, and marshmallows! They’re ooey, gooey, sweet, and crunchy, and the perfect sweet treat for people who love chocolate!

Four Rolo Marshmallow Peanut Butter Brownies made with peanut butter, marshmallows rolo candies and rice krispies sit in a cluster on a white surface against a white background.

I love cereal treats, brownies, caramels, marshmallows, and peanut butter. The combination of all of them together may sound strange, but it is delicious! It may be one of my favorite brownies ever. Not only are they scrumptious but they are EASY. 

As I still have a basket of Easter candy sitting in my pantry, I decided to use what I had. And since I was lazy, I started with a mix. My favorite brownie mix to use is Ghiradelli but you can use which ever you like.

Why you’ll love these Rolo Peanut Butter Brownies

  • Super easy if you use a packaged brownie mix as the base
  • Ramped up decadent brownies with peanut butter, marshmallows, cereal, chocolate chips and candy
  • Perfect when you want an over-the-top gooey rich brownie dessert
  • The ooey gooey melted caramel pieces are a fun twist

Ingredients

  • Box of Brownie Mix and ingredients on package
  • Rolo’s candy
  • Marshmallow fluff or Marshmallow Easter
  • Chocolate chips
  • Smooth peanut butter
  • Rice Krispie cereal
A closeup of a stack of rolo  marshmallow peanut butter brownies made with marshmallow easter egg candy and rolos sitting against a white background.

How to Make Rolo Marshmallow Peanut Butter Brownies

  1. Prepare a box of brownies according to the directions on the package.
  2. Bake in a 8×8 inch pan lined with foil.  
  3. After they are cooked according to the package directions let cool for a few minutes.
  4. Pour the marshmallow fluff in a layer over the brownies.
  5. Put a layer of the Rolo’s over the top.
  6. Return the pan to the oven for a few minutes until the Rolo’s melt.
  7. Remove from the heat and set aside.
  8. Add the peanut butter and the chocolate chips to a small sauce pan and combine and melt over low heat.
  9. Once mixture is melted, add the Rice Krispie Cereal and mix well.
  10. Pour the mixture over the brownies and spread to cover.
  11. Place pan in refrigerator to cool completely before cutting.

Note: I like the chocolate layer to have more Krispie Rice cereal in it, so I added about another 1/2 cup. I also cooled mine in the freezer for about 20 minutes and then lifted the bars out of the pan by the foil and cut into pieces.

I then returned the pan to the refrigerator. I also used chocolate covered marshmallow eggs for the marshmallow layer, as I had a bag of them left, but marshmallow fluff serves the same purpose. 

A cluster of dark brown rolo  marshmallow peanut butter  brownies made with peanut butter and rice krispies sits on a white surface against a white background.

Tips & Variations

  • Switch the brownies. Use your favorite homemade brownie recipe instead of a box mix.
  • Swap the cereal. Try cocoa krispies, honey oat, graham cracker cereal, or your favorite.
  • Sub the candy. Instead of Rolos try chopped Snickers, Milky Way, Reese’s Peanut Butter Cups or whatever candy you have on hand.
Closeup image of rich gooey rolo  marshmallow peanut butter brownies against a white background.

Storage

These brownies are best covered and stored in a cool place for up to 4 days. They can be frozen by tightly wrapping individually and stored in an airtight container for up to 2 months.

More Brownie Recipes

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Four dark chocolate brownies made with peanut butter, marshmallows rolo candies and rice krispies sit in a cluster on a white surface against a white background.

Rolo Marshmallow Peanut Butter Brownies

Rolo Marshmallow Peanut Butter Brownies are super-easy when you use a brownie mix and add candy, marshmallows, and cereal for a loaded brownie like no other!
Print Recipe

Ingredients

  • 1 box Brownie Mix plus ingredients on package
  • 1/2 bag Rolo's candy cut into pieces
  • 1/2 7-oz jar marshmallow fluff or Marshmallow Easter eggs cut in pieces
  • 2 cups chocolate chips
  • 1 cup smooth peanut butter
  • 2 cups Rice Krispie Cereal

Instructions

  • Prepare a box of brownies according to the directions on the package.
  • Bake in a 8×8 inch pan lined with foil.
  • After they are cooked according to the package directions let cool for a few minutes.
  • Pour the marshmallow fluff in a layer over the brownies.
  • Put a layer of the Rolo’s over the top.
  • Return the pan to the oven for a few minutes until the Rolo’s melt.
  • Remove from the heat and set aside.
  • Add the peanut butter and the chocolate chips to a small sauce pan and combine and melt over low heat.
  • Once mixture is melted, add the Rice Krispie Cereal and mix well.
  • Pour the mixture over the brownies and spread to cover.
  • Place pan in refrigerator to cool completely before cutting.

Notes

Note: I like the chocolate layer to have more Krispie Rice cereal in it, so I added about another 1/2 cup. I also cooled mine in the freezer for about 20 minutes and then lifted the bars out of the pan by the foil and cut into pieces.
I then returned the pan to the refrigerator. I also used chocolate covered marshmallow eggs for the marshmallow layer, as I had a bag of them left, but marshmallow fluff serves the same purpose. 
Course: Dessert
Cuisine: American
Keyword: Rolo Marshmallow Peanut Butter Brownies

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