Peanut Butter Rice Krispie Cake

Peanut Butter Rice Krispie Cake | neurotic baker
PeanuPeanut Butter Rice Krispie Cake | neurotic bakert Butter Rice Krispie Cake | neurotic baker
Peanut Butter Rice Krispie Cake | neurotic baker
Peanut Butter Rice Krispie Cake | neurotic baker

Months ago I saw a recipe for a rice krispie cake and thought it was adorable.  A friend of mine saw my tweet about the post and had a friend make the cake for her birthday.  She mentioned that it was a bit hard and very difficult to cut.  I was disappointed to hear that, but I knew I needed to try it myself, so I made my own peanut butter rice krispie cake with chocolate frosting.

I discovered that the trick is to not use a ton of rice krispies.  I like my treats on the chewy side anyway.  To be honest, Iā€™m lucky if Iā€™m able to get the treats from the pot into the baking pan.  I usually eat it warm right out of the pot!  I put the cake together and put it in the refrigerator just long enough for me to cut it without making a mess.  It was a total success!  It sliced well, and was nice and chewy, just the way I like it.  I let it sit in a cake dome overnight and took it to the office to share.  I think it lasted all of fifteen minutes.  I think this is the most adorable, quick, fun and easy way to make a dessert that anyone would love.  And the possibilities are endless when playing with different flavors!!!


Peanut Butter Rice Krispie Cake


  • 6 tablespoons butter
  • 2 packages (10 oz., about 40 each) marshmallows
  • Ā½ cup peanut butter
  • 10 cups rice krispies cereal
  • 1 can of chocolate frosting (or your favorite frosting)
  • sprinkles (optional)
  • parchment paper
  • 2 6- inch round cake pans
  • non-stick pan coating


  1. Line the sides and bottom of cake pans with parchment paper. Lightly spray the paper with non-stick pan coating.
  2. In large saucepan melt butter over low heat. Add marshmallows and stir until completely melted. Remove from heat. Stir in peanut butter until melted.
  3. Add half of the cereal into a large bowl. Pour the marshmallow-peanut butter mixture on top and still until well combined. Add the remaining cereal and stir until well coated.
  4. Using buttered spatula or wax paper divide the mixture evenly into the two cake pans, pressing evenly. Cool until firm. Invert the first cake pan onto a place or cake stand and spread with about 1 cup of frosting. Invert the second layer on top and repeat. Decorate with sprinkles if desired. Place in the refrigerator until just firm enough to cut, about 30 minutes.


  1. I would not make this for my children since I’m still keeping them away from sugar, but I have a sister-in-law that I think would love this. I’m going to send her the recipe!

  2. My birthday is coming up soon and I hope I can have this rice krispies cake to celebrate it. This looks so good I could eat a big chunk of it! Thanks for the idea. Love that it is so easy to make!

  3. This is my kind of cake! I like my rice crispy squares chewy too and I bet this cake is delightfully chewy! Hope someone makes it for me on my birthday šŸ™‚

  4. Now that looks like a fun idea! I have not thought about making rice krispie treats like this before! The kiddo’s birthday is coming up, I think I might do this for his birthday!

  5. I have to admit, when I first saw “Rice Krispie Cake” I thought, what ARE they thinking?? These treats are sweet just in a little bar! lol. But I also love peanut butter, so will have to give it a try! And sharing with a friend who I know LOVES peanut butter and always asks for extra in her sundae lol.

  6. This might just be the most amazing cake I have ever seen. I love rice krispie treats, and to add in peanut butter and a layer of chocolate? Absolutely jaw dropping!

    • Thanks! I love it when something so simple turns out to be so fabulous! And it was quick and easy to make too. The hardest part was not eating it all out of the pot šŸ™‚

  7. This looks absolutely amazing. I love rice krispie treats. I don’t know why I never thought to make a cake out of it. Yum!

  8. My family would love this cake. You’ve really amped up the flavor by adding the peanut butter and chocolate frosting.I need to make this when the grandkids come over!