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I’m just gonna say what you’re all thinking: these brownies are ridiculous. But in a very, very good way.

They’re what happens when Crack Brownies marry Slutty Brownies: they’re fudgy, chocolatey Peanut Butter Cup Brownies that have an Oreo Crust.

Like I said, ridiculous. But you want them anyway.

Peanut Butter Cup Brownies with Oreo Crust - the BEST brownie ever!

Sometimes I surprise myself. Sometimes I have to just gape in awe at my brilliance as a dessert thinker-upper.

Yes, that’s my new title. Like it?

Dessert Thinker-Upper (noun): a person who thinks deeply and seriously about dessert and who comes up with ridiculous dessert recipes that make you drool.

So in my role as Dessert Thinker-Upper, I’m always thinking about my next new dessert. I think about it at the gym, in the shower, and while I’m driving. I think about desserts when I’m trying to play Life with my daughter and when my husband talks to me about NFL Total Access. Long car trips? The perfect time for thinking up crazy ridiculous desserts.

If you read my post yesterday, you’ll know all about my trip to Palm Springs. On the way home I was thinking on a dessert I could make to send to our friends who lent us their condo, to say thanks. Because that’s how I say thank you: with dessert.

Makes you want to do something nice for me, doesn’t it?

Reese's Brownies with Oreo Crust - the BEST brownie ever!

Anyway, the treats needed to be mailed, so I thought cookies then bars then brownies. Because besides pie, I always think about brownies.

My next website needs to be Crazy for Brownies.

And if I could pick one kind of brownie to eat, it would have a crust. Brownies are just better with crust! If you don’t believe me, try it. You’ll thank me.

Naturally my next thought was an Oreo Crust. Because, well, who doesn’t love that?

And then, well. I thought, go big or go home. And I decided I would throw chopped Reese’s Peanut Butter Cups on top.

Oreo Peanut Butter Cup Brownies

I mean, do I even need to describe how good these are?

Crunchy Oreo crust.

Rich, fudgy, thick chocolate brownie. (These are baked in a 9×9 pan for ultimate thickness!)

And, BTW, fudgy, gooey brownie is where it’s at. Cakey, dry, sub-par brownies need not apply at Crazy for Brownies.

Chopped Miniature Reese’s Peanut Butter Cups.

Like I said, ridiculous.

In a good way.

Peanut Butter Cup Brownies with Oreo Crust - the BEST brownie ever!

My job is hard. But someone has to do it.

You’re welcome.

Stack of Peanut Butter Cup Brownies with Oreo Crust

Peanut Butter Cup Brownies with Oreo Crust

5 from 1 vote
These Peanut Butter Cup Brownies with Oreo Crust are the ultimate brownie! A crunchy Oreo crust topped with a homemade rich and fudgy brownie is baked with chopped Reese's Peanut Butter Cups!
Yield 16


For the Crust:

  • 20 Oreos
  • 1/4 cup butter melted

For the Brownies:

  • 2 ounces unsweetened baking chocolate coarsely chopped
  • 2 ounces semi-sweet baking chocolate coarsely chopped
  • 3/4 cup unsalted butter
  • 1 3/4 cups sugar
  • 3 eggs
  • 1/4 teaspoon salt
  • 1 tablespoon vanilla extract
  • 2 tablespoons unsweetened cocoa powder I used Hershey’s Special Dark
  • 1 cup all-purpose flour
  • 25 Miniature Peanut Butter Cups Reese’s, unwrapped and coarsely chopped


  • Preheat oven to 350°. Line a 9x9” pan with foil and spray with cooking spray.
  • Crush Oreo cookies to a fine crumb using a food processor. You can also place them in a gallon size ziploc bag and roll it gently with a rolling pin until you have a fine crumb. Stir cookies into melted butter and press into the bottom of your pan. Chill until brownies are prepared.
  • Place the two baking chocolates and butter in a large, microwave safe bowl. Heat on HIGH power for 2-3 minutes, stirring every 30 seconds, until chocolate is smooth. Stir in sugar. Add eggs, salt, vanilla, and cocoa and stir well. Add flour and stir carefully.
  • Spread batter in prepared pan. Sprinkle the top with the chopped peanut butter cups.
  • Bake about 31-34 minutes, until a toothpick 1 inch from the outside of the pan comes out mostly clean. The center may still be a little jiggly. Let cool before cutting.
  • Store in an airtight container at room temperature for up to 4 days, or place in an airtight container and freeze for up to one month.
Nutritional information not guaranteed to be accurate

Click here to see more PEANUT BUTTER recipes!

These are the ULTIMATE brownies! Peanut Butter Cup Brownies with an Oreo Crust! 3 levels of decadent chocolate!

Brownie Gooey Bars

Brownie Gooey Bars (3 of 5)w

Peanut Butter Swirl Brownies

Peanut Butter Swirl Brownies (1 of 4)w

Oreo Brownies

Fudgy Oreo Brownies (1 of 7)w

Sweets from friends:
The Ultimate Chocolate Peanut Butter Brownie Sundae by Bless This Mess
Brownie Pudding by Cookies & Cups
Oreo Cream Brownies by Something Swanky


Last Updated on August 21, 2018

Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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  1. I am planning on making these this weekend and am a bit of a novice when it comes to baking. In the ingredients you have both butter and unsalted butter listed, but you don’t specify which butter to use when. Please help me out.

    1. I just looked at the ingredients again and see you do in fact specify which butter goes with what. I tried to delete my previous comment but couldn’t find how….I suppose this is what I get for being up at 1am. Sorry! And thanks for the recipe!

  2. Could these be baked in a 13×9 pan and with a different candy other than reeses for those with peanut allergies?

    1. You can use any candy you like for sure! You can also bake them in a 9×13 but you’ll need to make a little more crust (about 1.5 times) unless you want it really thin! Enjoy!

  3. I made these brownies last night and the Reeses on top basically created a layer that heat couldn’t penetrate through and NONE of the brownie batter baked. I baked it even longer than was the recipe called for.

    Did anyone else have a similar issue? I was very disappointed and I’m not sure if I’m going to attempt this recipe again, fearing that I’ll have to throw the entire batch away again.

    Any ideas or tips to prevent something like this happening again?

    1. That is so strange! I’ve made brownies with Reese’s and other candies on top before and never had that happen. If you do make them again, maybe try to spread out the peanut butter cups more (or use less?) so that some air pockets are between them for the heat to get through. The brownies will definitely stay more fudgy than a regular brownie you’d just bake (the crust on the bottom keeps the entire pan like the fudgy center of a traditional pan of them) but they shouldn’t be raw/liquidy. Did you make any other changes? Also, check your oven temp. Do you have a thermometer? Possibly you need to lower the temp a little and bake them longer.

      1. I still desperately want to eat these brownies so I probably will try it again in the future. Thanks for the suggestions, I’ll definitely check my oven before baking something else in it.

  4. Haha, you made crack whore brownies. They do look and sound completely ridiculous, and I’m already addicted before even trying them. Thanks for thinking this one up. Pinned!

  5. Oh no…these look dangerously decadent. I’m totally on board with the idea of crust in brownies…especially when that crust is of the Oreo variety!

  6. You’ve DEF achieved geniuuuus status!!! These brownies are so incredibly decadent and perfect it’s just…I can’t even….ahhhhh SO GOOD

  7. Who doesn’t love a oreo crust? Or anything oreo for that fact? You could put dirty shoes on top of this crust and I’d eat it…okay I might be a bit dramatic but I think I’ve made my point. 😉 This looks amazing and I love it! 🙂

  8. Wow, these brownies look incredible Dorothy! That’s so nice of you to make these as a thank-you, I would love to find these heavenly brownies in the mail! So many of my favorite things jam packed in here – pinning!