Peanut Butter Cookie Brownies

filed under: Bars · Dessert on May 5, 2020

Peanut Butter Cookie Brownies are a decadent dessert that starts with a layer of a peanut butter cookie, followed by a layer of double-stuffed Oreo cookies and topped with chocolate brownies, all baked together for a melt-in-your-mouth treat.

And, did I mention I also have a homemade Peanut Butter Sauce topping you can pour over the brownies?!?! Well, I do! It is optional, but I highly recommend it😀. Try my Peanut Butter Cookie Dessert Pizza for another sweet treat using the peanut butter sauce.

Peanut Butter Cookie Brownies

These are known as “Peanut Butter Slutty Brownies” in the baking world. Slutty brownies were first documented on the internet in 2011. These bars with a cookie dough base, Oreos in the middle, and brownies on top were not originally referred to as slutty at all. But, since then, with the name being shared on social media, most people refer to and know this three-layered brownie dessert as slutty brownies, so I am sticking with that!  And, the urban dictionary describes these brownies as ‘a chocolatey froth pile of satisfaction’, which I really can’t argue with. 

Peanut Butter Slutty Brownies on White Plate on White Napkin

Peanut Butter Oreo Cookie Brownies Recipe

Like all slutty brownies, these Peanut Butter Slutty Brownies have a cookie dough layer, an Oreo cookie layer, and a brownie layer. If you are brave you can try my additional peanut butter sauce topping as well!

Peanut Butter Cookie Layer Ingredients (full recipe below)

  • Creamy peanut butter (You could get away with chunky if you prefer or that is all you have on hand.)
  • Granulated sugar
  • Eggs
  • McCormick vanilla extract

Oreo Layer Ingredients

  • 24 Double-stuffed Oreo cookies (You could also use regular Oreo cookies or experiment with other flavors.)

Brownie Layer Ingredients

  • Box of brownie mix (18.3 ounces)
  • McCormick cinnamon

Peanut Butter Sauce Ingredients (OPTIONAL, but SO worth it…)

  • Peanut butter (For this part of the recipe, I prefer chunky peanut butter; but, again, it’s your preference.)
  • Butter
  • Butterscotch chips

Process Shots of Raw Ingredients for Peanut Butter Slutty Brownies - Peanut Butter Cookie Layer, Oreo Layer, and Brownie Batter Layer

How to Make Peanut Butter Cookie Brownies

Peanut Butter Slutty Brownies are an easy dessert to make and bakes in one pan! So, get your ingredients ready and preheat the oven to 350°F.  To make the brownies, start with the peanut butter cookie dough base layer. Once you have combined the cookie ingredients, spread the dough into a greased 9×13-inch pan. Place the Oreo cookies on top of the cookie dough.

Meanwhile, in a separate bowl, make the brownie batter by following the instructions on the box. Then, add the 1/2 teaspoon of cinnamon to the brownie batter. Pour that on top of the Oreo cookies and bake it all together for 35-40 minutes. To check for doneness, insert a toothpick into the brownie layer only. The toothpick should come out with a few crumbs on it, but no wet batter. Let the brownies cool before cutting and adding the peanut butter sauce.

Stack of Peanut Butter Slutty Brownies with Oreos and Vanilla and Cinnamon in the Background

How to Make the Peanut Butter Sauce

Yes, this Peanut Butter Sauce is an added bonus to this recipe, but if you have the ingredients on hand to make this, I would give it a try! Even if you don’t want to add it to these brownies, pour some over ice cream to get that ‘magic shell’!

To make the sauce, in a medium saucepan, melt the butter and peanut butter over medium-low heat. Once they are fully melted and combined, add in butterscotch chips. Remove from heat and stir continually until mostly melted. There may be chunks on the bottom of the pan, but that is fine! Let it cool a bit before adding it to the brownies or ice cream or both! You can store the brownies at room temperature or in an airtight container for up to three days.

Stack of Peanut Butter Slutty Brownies with Peanut Butter Butterscotch Sauce Being Drizzled Over Top

Looking for More Decadent Brownie Desserts?

Ooey Gooey Pecan Pie Brownies

Homemade Brownie Mix

The Best Brownies

From Scratch Brownie Cookies

French Silk Brownies

Peanut Butter Slutty Brownies
Prep Time
10 mins
Cook Time
40 mins
Cooling Time
10 mins
Total Time
1 hr
 

Peanut Butter Slutty Brownies are a decadent dessert that starts with a layer of a peanut butter cookie, followed by a layer of double-stuffed Oreo cookies and topped with chocolate brownies, all baked together for a melt-in-your-mouth treat.

Course: Dessert
Cuisine: American
Keyword: Peanut Butter Slutty Brownies
Servings: 12 large brownies
Calories: 617 kcal
Author: Amanda Rettke--iambaker.net
Ingredients
PEANUT BUTTER COOKIE LAYER
  • 2 cups (516g) creamy peanut butter
  • 2 cups (400g) granulated sugar
  • 2 large eggs, room temperature
  • 1 tablespoon McCormick Vanilla Extract
OREO LAYER
  • 24 Oreo cookies, double stuffed
BROWNIE LAYER
  • 1 box (18.4 ounces) brownie mix, prepared per box instructions
  • 1/2 teaspoon McCormick Cinnamon
PEANUT BUTTER SAUCE - OPTIONAL
  • 1/2 cup (129g) peanut butter, chunky
  • 1/2 cup (1 stick or 113g) butter
  • 1/2 cup (85g) butterscotch chips
Instructions
PEANUT BUTTER SLUTTY BROWNIES
  1. Preheat oven to 350°F.

  2. In a bowl of a stand mixer (or a large bowl if using a handheld mixer), cream together the peanut butter and sugar until well blended.

  3. Beat in the eggs and vanilla.

  4. Press the peanut butter cookie mixture into a greased 9x13-inch pan.

  5. Place the Oreo cookies on top of the peanut butter cookie layer. (No need to crush them or break them into pieces.)

  6. In a separate bowl, make the brownie batter by following package instructions.

  7. Add cinnamon to the brownie batter. (Don't skip this! It's SO good!)

  8. Pour the brownie batter over the layer of Oreo cookies.

  9. Bake for 35-40 minutes, or until an inserted toothpick (in the brownie layer only) comes out with a few crumbs, but not wet batter.

  10. Allow to cool for 10 minutes before cutting and adding the optional Peanut Butter Sauce.

PEANUT BUTTER SAUCE - OPTIONAL
  1. In a medium saucepan, melt butter and peanut butter over medium-low heat. Once they are fully melted and combined, add in butterscotch chips. Remove from heat and stir continually until mostly melted.

  2. There will be chunks in the bottom of the pan, but this is okay. Set aside to cool slightly. Pour over the brownies as an added bonus!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

Comments

  • JudyB says:

    Love Your Recipes!!!!
    Thank you, for sharing!💗
    J. Bunch

  • Donetta says:

    Take out the Oreos add Reese’s peanut butter cups and then spring Reese’s pieces on top. You’re welcome! Its amazing!!!!

  • Rosemary koch says:

    I missed all the recipe for your orange jello – pudding etc.

  • EARLEEN CASE says:

    Hi , I try to watch your videos when I can. I do like watching them. I plan on trying this recipe for the PB Slutty Brownies.
    I’m a cleaner at a school, and before all this virus started, the Home and Careers teachers let me taste a treat the class made that day.
    It was yummy and similar to your recipe , So i waited till i went to visit my son and his family so my granddaughter could help me make it (she’s 7). Anyway her recipe was :
    Cookie Dough Roll (bottom layer) since my son is a PB junkie i bought the PB dough ,
    Double Stuff Oreo’s (middle layer) PB & Chocolate Oreo’s
    Brownie Mix (top Layer)

  • Don't Pass on Dessert!