Filed Under: Brownie | Chocolate | Cookies | Dessert

Peanut Butter Slutty Brownies

Recipe By Tessa Arias
August 6th, 2012

Peanut Butter Slutty Brownies with a peanut butter cookie crust, peanut butter cups, and brownie in every bite. These over the top treats are to die for!

Yield: 16 brownies

Prep Time: 20 minutes

Cook: 30 minutes

Peanut Butter Slutty Brownies - PB cookie, PB cups, and brownie! To die for!

Tessa's Recipe Rundown...

Taste: The combination of peanut butter and chocolate is a dream.
Texture: Thick, chewy, gooey, and all with a peanut butter cup in the middle! So. good.
Ease: This took me about 25 minutes to get into the oven. Waiting for them to bake then cool is definitely the hardest part.
Appearance: How could you resist taking a bite?
Pros: Over the top goodness.
Cons: Not even remotely healthy. Cut small squares!
Would I make this again? Yes.

From my last post you may think I have an obsession with over the top dessert bars. That’s actually probably a fair assessment. I love things in the shape of bars because they’re usually easy to make, easy to transport, and easy to eat. Also, you can really do anything you want with a bar. Like with these bars, I took my love for peanut butter + chocolate to a whole new level. Meet Peanut Butter Slutty Brownies!

Peanut Butter Slutty Brownies

You might remember the Slutty Brownies I posted earlier this year. They had a layer of chocolate chip cookie, a layer of Oreos, topped with a layer of brownie. This recipe is the peanut butter version of that with a layer of peanut butter cookie, a layer of peanut butter cups, and a layer or brownie. I went there. You should go there, too, because it’s a delicious place.

How to make
Peanut Butter Slutty Brownies

Yield: 16 brownies
Prep Time: 20 minutes
Cook Time: 30 minutes
Total Time: 50 minutes
Peanut Butter Slutty Brownies with a peanut butter cookie crust, peanut butter cups, and brownie in every bite. These over the top treats are to die for!


Peanut butter cookie layer:

  • 1/2 cup plus 2 tablespoons all-purpose flour
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon baking powder
  • Pinch salt
  • 1/2 stick (4 tablespoons) unsalted butter, at room temperature
  • 1/4 cup granulated sugar
  • 1/4 cup packed light brown sugar
  • 1/4 cup peanut butter
  • 1 large egg

Peanut butter cup layer:

  • 16 chocolate peanut butter cups, such as Reese's

Brownie layer:

  • 10 tablespoons (1 1/4 sticks) unsalted butter
  • 1 cup granulated sugar
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon salt
  • 2 teaspoons vanilla extract
  • 2 large eggs
  • 1/2 cup all-purpose flour


For the peanut butter cookie layer:

  1. In a medium bowl whisk together the flour, baking soda, baking powder, and salt.
  2. In the bowl of an electric mixer beat the butter and sugars on medium speed until light and fluffy, 2-3 minutes. Beat in the peanut butter until combined. Beat in egg until combined. On low speed add the flour mixture, beating until just incorporated. Place in refrigerator until ready to use.

For the brownie layer:

  1. Preheat oven to 350 degrees F. Line a 8x8-inch pan with tin foil then spray foil with non-stick cooking spray.
  2. In a medium saucepan melt the butter. Remove from heat and add the sugar and cocoa powder, whisking to combine. Add salt, vanilla, and eggs. Whisk until combined. Add flour, mixing until just combined. Set aside.
  3. Press cookie dough mixture into prepared pan, spreading evenly. Layer peanut butter cups in one even layer on top of cooking dough, pressing slightly. Pour brownie batter over peanut butter cups and cookie dough in one even layer. Bake for about 30 minutes, or until the edges are set. Don't overbake. Let cool completely before cutting into 16 bars. Brownies can be stored in airtight containers at room temperature for up to 3 days

Recipe Notes

Adapted from this recipe
Course: Dessert
Cuisine: American
Tessa Arias

About Tessa...

I share trusted baking recipes your friends will LOVE alongside insights into the science of sweets. I'm a professionally trained chef, cookbook author, and cookie queen. I love to write about all things sweet, carb-y, and homemade. I live in Phoenix, Arizona (hence the blog name!)

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Recipe Rating

  1. #
    Tara @ Chip Chip Hooray — August 6, 2012 at 7:14 am

    I would run an extra mile for these. They are all KINDS of decadent and I love it. ๐Ÿ™‚

  2. #
    Emily — August 23, 2012 at 2:19 pm

    I made these last weekend, and while they tasted fabulous, the middle of the brownies did not set and was basically like gooey fudge. Any ideas as to what might have happened? After cooking for 30 minutes, I let them cool completely. When I cut them, I noticed the middle wasn’t done and put them back in the oven for 15 more minutes, but they still didn’t bake. I ended up throwing out the middle and putting the rest in the refrigerator until they had hardened a little. Thanks for the recipe though and I’m back on your site today looking for dinner ideas!

  3. #
    majestic seo — August 29, 2012 at 12:39 am

    Thank you for some other fantastic post. Where else may just anyone get that kind of info in such an ideal method of writing? I’ve a presentation subsequent week, and I’m at the look for such info.

  4. #
    Kelly-Anne — September 1, 2012 at 6:22 pm

    Nice recipe. I love a simple brownie recipe which is easy for the kids ๐Ÿ™‚
    I also like the below brownie recipe.
    Thanks for sharing,

  5. # — September 25, 2013 at 10:46 am

    These brownies are great…rich, yummy peanut butter cup flavors with chocolate! What more could you want? I made them for my thirty-something girls. They loved the name and the brownies They were a big hit. Then took them to work. They couldn’t get enough of them. These are a definite make again.

  6. #
    jlbvk — January 16, 2015 at 5:54 pm

    This sounds fantastically delicious! I’m re-naming it though. First crack potatoes, now slutty brownies? Over-sensitive maybe, but where does it end?

  7. #
    Cynthia K — July 19, 2020 at 7:42 pm

    Made these this evening. I baked them for 30mins and the brownie layer was set. The peanut butter cookie layer was completely raw. Anyone else have this issue? My oven always bakes items alot quicker than what a recipe calls for.

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