Peanut Butter Cup Crack Brownies are completely over the top in the best way possible! Soft, fudgy brownies, with a layer of peanut butter cups, topped with a thick crispy peanut butter chocolate layer!
If you love brownies make sure to try my favorite Homemade Brownies Recipe!

What Are Peanut Butter Cup Crack Brownies?
These Peanut Butter Cup Crack Brownies are the dessert you should bring to any event where you want to seriously impress people. I can’t even begin to describe their deliciousness. They are consistently one of the most popular recipes on my website for good reason, EVERYONE LOVES THEM! You have a fudgy brownie with a layer of peanut butter cups and chopped peanuts sandwiched between crispy chocolate peanut butter fudge. Over the top? YES. Delicious and easy? Absolutely!
Ingredients:
- 1 box brownie mix
- honey roasted peanuts
- peanut butter cups
- semi-sweet chocolate chips
- butter
- creamy peanut butter
- Rice Krispie cereal
- vanilla
- kosher salt

How To Make Peanut Butter Cup Crack Brownies:
So I started with a box of Ghirardelli Double Chocolate Brownies… they are some of my favorite boxed brownies. While they were baking I chopped up some peanut butter cups and honey roasted peanuts.


When your brownie has 5 minutes left to bake pull it out of the oven and sprinkle your peanut butter cups and peanuts all over the top. The chocolate will melt and then you can use an off-set spatula to spread the chocolate evenly on top.


Set all that aside and then in a microwave safe bowl combine chocolate chips, peanut butter and butter in a bowl and melt it in the microwave until smooth. Then stir in some vanilla, salt and krispie cereal. Pour that on top of the brownies and spread evenly.


Now chill the brownies for 2 hours, until the top layer is set.

Here Are Some More Brownies Recipes To Try:
- M&Ms Brownies
- Cookies and Cream Stuffed Brownies
- Marshmallow Brownies
- Bombshell Oreo Brownies
- Sweet and Salty Brownies
Peanut Butter Cup Crack Brownies
Description
Peanut Butter Cup Crack Brownies are completely over the top in the best way possible! Soft, fudgy brownies, with a layer of peanut butter cups, topped with a thick crispy peanut butter chocolate layer!
Ingredients
- 1 box brownie mix (not family sized), prepared according to package directions in a 9×9 pan
- 1/2 cup chopped salted or honey roasted peanuts
- 12 peanut butter cups, chopped
- 2 cups semi-sweet chocolate chips
- 1 tablespoon butter
- 1 1/4 cups creamy peanut butter
- 1 3/4 cups Rice Krispie cereal
- 1 teaspoon vanilla
- 1/2 teaspoon kosher salt
Instructions
- Bake the brownies according to package directions in a 9×9 pan lined with foil.
- During last 5 minutes of baking, remove from oven and sprinkle chopped peanut butter cups and chopped peanuts on top. Return to oven for remaining 5 minutes to melt the chocolate.
- As soon as you pull them out of the oven, spread the melty peanut butter cups/peanuts with an off-set spatula to smooth over top. Let brownies cool.
- Next in a microwave safe bowl combine chocolate chips, peanut butter and butter. Heat in microwave for 1 minute, stirring when done. If needed, continue heating in 20 second increments until chocolate chips are melted.
- Stir in cereal, vanilla and salt until evenly combined.
- Pour over brownies and smooth. Chill until chocolate is set, about 2 hours.
- Cut into squares to serve
Notes
Store airtight for up to 3 days. You can store these at room temperature or in refrigerator.
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A brownie addiction. There could be worse things, ya know!
Dang those look pretty damn good. I do love me some Reeses!
Can we use 8×8 pan for this?
You could, but the chocolate layer on top might be a bit too thick. If you use the 8×8 I’d cut the chocolate back to 1 1/2 cups and the pb back to 3/4 cup!
Cut Back? That is a sacrilege to this recipe. I want to know if doubling it would work well in a 9 x 13 x 2 baking pan. I would try it but I am an inexperienced baker and would hate to waste a lot of expensive ingredients on an experiment. This recipe sounds great!
What I would do is buy a brownie mix that is “Family Sized” which will work perfect in a 9×13…
The other ingredients, I would increase the chocolate chips by 1 cup and the peanut butter by 1/2 cup, and the krispie treats by 1/2 cup. I don’t think you could mess it up!
As for the pb cups and peanuts, just throw in a few more, no need to be exact for this 🙂
Thanks Shelly for your prompt reply. I shall be trying this recipe adjustment out within a couple of weeks because I am going to be attending a “Potluck” gathering and I think that these brownies will blow them away. 🙂
I really do appreciate your blog and I will be following it regularly because your recipes look awesome
Join the Are the peanut butter cup the mini or full size?
discussion
Full sized.
Hello, friend. Is the house next door to you for sale? Do you need a house guest, perhaps? Someone to fold your laundry?
Um… yes!
I don’t know why I’m always so surprised at how awesome the recipe you’ve shared this time is. But yeah, yum!
Holy what!? These look like pure amazing!
Crack indeed! These look incredible!
OH MY WORD!! These look TOO good!! Not sure I could stop if I ever got started! 🙂
This is my kind of crack! Oh yes one bite and I’d be hooked 🙂