Peanut Butter Cup Crack Brownies

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!

Peanut Butter Cup Crack Brownies | Cookies and Cups

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!

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…

Bowl of peanut butter cupsIn all honesty I used peanut butter cup eggs that I have leftover from Easter. Shhh, don’t tell my kids.
Then I chopped up some peanuts…

Bowl of chopped peanutsMix those together.

Bowl of peanut butter cups and chopped peanutsWhen your brownie has 5 minutes left to bake pull it out of the oven and sprinkle your pb cups and peanuts all over the top…

Pan with peanut butter cup brownies ingredientsThe chocolate will get melty.

When they’re done pull them out and using an off-set spatula, spread them all over…

Pan of Peanut butter cup crack browniesLet that situation cool.

Then melt some chocolate chips, peanut butter and butter in a bowl…stir in some vanilla, salt and krispie cereal…

Picture of pouring Rice Krispie cerealPour that all over top of the brownies.

Pouring melted chocolate mixed with Rice Krispie cerealNow let that chill for about 2 hours.

When they’re set up you can dig in.
The foil makes the whole situation easier, so don’t forget to line your pan before you bake your brownies…

Pan of Peanut butter cup crack browniesThen go ahead and get to cutting…

Pan of sliced Peanut butter cup crack browniesGorg. Us.
Stack of Peanut butter cup crack brownies
Have your your local rehab facility on speed-dial.  You’ll need them.


Peanut Butter Cup Crack Brownies


makes 25 squares



  • 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 Tbsp butter
  • 1 heaping cup creamy peanut butter (or 1 1/4 cups)
  • 1 3/4 cups crispy rice cereal
  • 1 tsp vanilla
  • 1/2 tsp – 1 tsp kosher salt


  1. Bake brownies according to package directions in a 9×9 pan lined with foil.
  2. 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.
  3. 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.
  4. 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.
  5. Stir in cereal, vanilla and salt until evenly combined.
  6. Pour over brownies and smooth. Chill until chocolate is set, about 2 hours.
  7. Cut into squares to serve


Store airtight for up to 3 days. You can store these at room temperature or in refrigerator.

Recipe adapted from bhg

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Hi! I’m Shelly and I’m an addict. Of the buttercream sort. I started this site a few years ago as a way to justify my sugary, buttery obsession with desserts. It has worked out well for me so far, because as it turns out you guys all love sugary, buttery desserts too! It feels good to know you're not alone, doesn’t it?

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December 11, 2021 3:40 pm

How does a nine x nine pan make 25 pieces

Lore Boydsam
October 9, 2021 10:52 pm

May I use a 9×13 inch cake pan versus a 9×9 inch pan to make this recipe, or would that result in a thin brownie mixture? Also, would I be allowed to use a non stick aluminum foil to line the pan or stick with “regular” aluminum foil—if “regular” foil, do you recommend not to grease it a little? Please advise me. I am looking forward making your recipe and I do thank you.

September 24, 2021 5:48 pm

Are the peanut butter cups used full size.

Delaney Evol
September 23, 2021 4:52 pm

I finally found and bought a 9 x 9 pan to make this great recipe. I mistakenly bought a fudge brownie mix versus your instructions using brownie mix. I read the recipe ad nauseam, so what do I do? I pick up the wrong type of brownie mix. Would I still be able to use the fudge brownie mix or will it be too sweet or just plain ruin the end result? I thought I had an IQ equal to that of a carrot but that may be debatable. As I stated in an earlier comment/question, I would appreciate your… Read more »

Delaney Evol
September 23, 2021 8:32 pm
Reply to  Shelly

You are very thoughtful addressing my less-than-erudite-questions, professional and talented. I swear by your recipes.
Thank you for your timely response.

Delaney Evol
July 29, 2021 9:50 pm

I have spent more time than I care to admit trying to find any store near my home (gas prices) that carries a box of brownie mix that is a smaller size than that of the family sized . I did read you said the family size would be thicker. I am not confident in my first attempt making these to have the outcome turn out thick. Also, may I use the same amount of shortening to replace the butter when melting the chocolate chips? I would truly like to make this for those who work at my Vet clinic… Read more »

Pat P
December 19, 2020 12:36 pm

Can you freeze these brownies?

July 12, 2020 7:28 pm

I only have family size brownie mix at the house? Can I still use it? How does this alter the recipe?

May 26, 2020 8:53 am

These are delicious! I made them for a cookout with friends who enjoyed them as well. Easy to prepare.
Because I bought crispy cereal for this recipe, I made rice crispy treats as well. These 2 desserts together were a great balance because brownies are very sweet.

November 21, 2019 7:49 am

I omitted the peanuts and after I smooth out the resses I laid bite size pretzels on top. Drizzled caramel over that and then added the cereal topping. I call them my Take 5 brownies

September 21, 2019 11:34 am

I made these last night for our night shift Labor&Delivery potluck.
I bake a lot of stuff for midnight work potlucks but this is my girls’ new favorite treat!! They were SO good. The day shift wouldn’t let me take the few leftovers home!
The rice krispy/PB/chocolate topping was the best part, hands down.

Thanks for sharing!!!

May 19, 2019 8:38 pm

These came out PERFECTLY!!!!! So rich, a lil dab will do ya which bears better for my waistline. My bf mandated to keep this recipe in my arsenal. Most excellent!

March 10, 2019 9:21 pm

Disappointed this recipe was a disaster for us, the Reese did not melt and the peanuts burned… I may try it again using the reese pb chips mixed with milk chocolate chips and no peanuts…

February 8, 2019 8:31 pm

These are AMAZING! had them at a party and immediately had to try it myself. everyone who had one LOVED them! The peanut and chocolate layers are so delicious, I want to try it without the brownie layer next time. Has anyone tried this? was it successful?

January 19, 2019 5:16 pm

My top layer separated from my brownies 🙁
What can I do to fix this?

October 26, 2018 11:09 am

I hope this question has not been asked already. So many comments and not enough time to read them all right now.
I assume you used full size peanut butter cups and not the minis. Did I assume correctly?

Shelly Hi! I’m Shelly and I’m an addict. Of the buttercream sort. I started this site a few years ago as a way to justify my sugary, buttery obsession with desserts. It has worked out well for me so far, because as it turns out you guys all love sugary, buttery desserts too! It feels good to know you're not alone, doesn’t it?

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