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Peanut Butter Cookie Brownies

Peanut Butter Cookie Brownies

After enjoying my new favorite snack, Trail Mix Peanut Butter Bars, I just couldn’t get enough peanut butter. So I decided to make peanut butter cookie brownies, yes you read that right, these brownies have a peanut butter cookie bottom topped with my super LAZY girl chocolate frosting!

Seriously, the frosting is so easy, it’s a little embarrassing!

Peanut Butter Cookies


   These brownies start out by using refrigerated peanut butter cookie dough, I used Pillsbury Big Deluxe Reese’s Mini Pieces Peanut Butter Cookie Dough, for even more delicious peanut butter flavor. I pressed the 12 cookie dough pieces into a 9×9 pan lined with foil. Don’t forget to line your pan with foil AND spray with non-stick cooking spray, this will make it so easy to take the brownies out of the pan to cut them into squares.

 I made my favorite brownie mix, Betty Crocker Triple Chunk Premium Brownie Mix with Hershey’s, according to the directions on the box. No need to jazz up brownie mix like a cake mix, I think they’re just as good from the box as they are from scratch but that’s just me!

 I baked these brownies for 30 minutes, make sure you watch them so they don’t burn…no one likes burnt brownies or cookies for that matter.

And lastly, I frosted these brownies with my lazy girl frosting! So here it is, all you need is 1/4 cup powdered sugar, 1/2 cup peanut butter and one tub of whipped chocolate frosting. Mix it all up and it taste just like you made it from scratch without all the work! Told ya it was a super lazy girl frosting. That’s it, now you have the best of both worlds, peanut butter cookies and brownies in one delicious brownie bar, kinda like my Chocolate Chip Cookie Brownie Bites!


Peanut Butter Cookie Recipe

Peanut Butter Cookie Brownies
Yield: 12 Brownies

Peanut Butter Cookie Brownies

★ Make sure to read my BAKING TIPS above before you start baking!

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes


  • 16 ounces refrigerated peanut butter cookies dough
  • 1 tub of whipped chocolate frosting
  • 1/4 cup powdered sugar
  • 1/2 cup creamy peanut butter


PRE-STEP: Preheat oven to 350F degrees. Line 9x9 pan with foil and spray with non-stick cooking spray.

STEP 1: Press peanut butter cookie dough into bottom of prepared pan.

STEP 2: Mix brownie mix according to package directions. Pour over peanut butter cookie dough and spread evenly with a spatula.

STEP 3: Bake for 30 minutes or until tooth pick inserted into center comes out clean. Let cool for 15 minutes before frosting.


STEP 4: In a large bowl, mix powdered sugar, peanut butter and whipped chocolate frosting until combined.

STEP 5: Frost cool brownies and cut into squares before serving.


*Store brownies in an airtight container at room temperature for up to 1 week. Unfrosted brownies can be frozen for up to 2 months.



Check out more delicious Brownie Recipes

Try these Chocolate Frosted Peanut Butter Bars next!

Chocolate Peanut Butter Bars

26 comments on “Peanut Butter Cookie Brownies”

  1. These are a go-to if I want a sure fire party pleaser! Love them & easy peasy 🙂

  2. These peanut butter cookie brownies look amazing! I can’t get enough peanut butter!

  3. Good grief! I am sold on these – SOLD!! Wiping drool off my keyboard now…

  4. they look yummy!

  5. You’re killing me with all of these desserts! Once again, these look fantastic!

  6. These brownies just look too good to be true!! I’d kill for a slice right about now 🙂

  7. Is there anything better than chocolate and peanut butter?! And the fact that it’s a lazy girl version makes it that much better!! Although I prefer to call it the busy girl version 😉

  8. And somehow you just made brownies even better, delicious Jenn!

  9. There is nothing better than peanut butter brownies… I’m licking my screen!

  10. You’re doing it again with the peanut butter… I’m drooling over here!

  11. woah. i need these 🙂

  12. Love that such a simple twist looks so spectacular. Drooling!

  13. OH my sweet goodness! I’d like half a pan please.

  14. Chocolate + PB are an awesome combo!

  15. Jenn I love how you take store bought mixes and frostings and bring them to the next level! You are so creative. PB and chocolate are the ultimate duo, so I’m sure these are fabulous!

  16. Good gravy!!! I am sitting here drooling over these easy and delicious bars! I am in love with the lazy girl frosting…totally my kind of frosting!!!

  17. Oh yum – my favorite combination in one amazing dessert! Pinned!

  18. Jenn, I could eat everything you make. YUMM friend!

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