Chewy, chocolaty brownies layered with Reese’s peanut butter cups and loaded with crushed Oreos.
In two days, the New Year’s resolutioners will be at it. Healthy recipes will reign supreme and Pinterest and Google will be inundated with people scouring for low-fat and healthy options (I even have a few lighter desserts planned for the start of 2016). Quinoa will fly off the grocery store shelves at unparalelled speed and the gyms will be clogged with new patrons (and plagued by broken machinery).
Perhaps in 2016 these habits will stick and we will clink our mugs of matcha tea together and munch on rice cakes while we spend our days discussing the best ways to incorporate kale into our diets, but today is not that day. Today, I have something diabolically delicious to share with you, something just right for sending off 2015 (and the calories don’t carry over into the new year, right?).
Today I present to you these Peanut Butter Cup Loaded Oreo Brownies, and I highly recommend that you don’t let 2015 pass you by without having tried them.
These brownies almost didn’t make it onto the blog.
Not because of any defect or shortcoming on their part (I mean, just look at them) but because I am a glutton of the highest degree with an embarrassing and indomitable lack of self-control. A “sample” of a corner turned into a magic trick where I made half a pan of brownies disappear in less than 30 seconds — and I still hadn’t taken my photographs yet. I held myself off from polishing off the pan just long enough to snap a few shots and then I called my sister and begged her to come pick them up (she obliged) because I couldn’t trust myself around them any longer.
They are, in fact, quite untrustworthy. They’re seductive and sinister and pull you in like a siren to a sailor, but it’s worth every calorie — sheer perfection in every bite. Chewy, exceedingly chocolaty, stuffed with mines of milk chocolate and peanut butter cups, pumped full of cookie bits, the shiny, crackly top littered with cookie pieces, these cookies are a dream come true, a flavor explosion, a confectionary firework.
These peanut butter cup stuffed Oreo brownies are just the right way to send 2015 out with a bang. Happy (almost) New Year, everyone!

Peanut Butter Oreo Brownies
Ingredients
- 12 Tbsp butter cut into Tbsp-sized pieces, 1 1/2 sticks
- 3/4 cup cocoa powder
- 1 2/3 cup granulated sugar
- 2 Tbsp water
- 1 tsp vanilla extract
- 2 eggs + 1 egg yolk lightly beaten
- 1 1/3 cup all-purpose flour
- 1/2 tsp baking powder
- 1/4 tsp salt
- 15 Oreo Cookies divided
- 16 Peanut Butter Cups
Instructions
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Preheat oven to 350F and lightly grease/spray a 9x9 pan.
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In a large, microwave-safe bowl microwave your butter until melted.
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Stir in cocoa powder and sugar.
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Stir in water and vanilla extract.
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Add eggs and egg yolk, stirring until combined..
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In a separate bowl, combine flour, baking powder and salt.
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Gradually add to butter mixture until completely combined.
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Break/crush 12 Oreo Cookies (do not completely grind into fine crumbs, I placed them in a Ziploc bag and smacked them with a rolling pin until they were broken into pieces) and fold into the batter.
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Layer about half of the brownie mixture into the bottom of your prepared pan. Evenly spread peanut butter cups over the batter, gently pushing down so they are snug.
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Spread the remaining half of the batter on top.
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Crush your remaining Oreos and sprinkle over the top of the batter.
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Bake at 350F for 35-40 minutes (the toothpick test is difficult to do here due to the peanut butter cups -- the best way to tell that these are done is to look for set centers that have firmed and the center should feel somewhat set and not liquidy to your fingertips).
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Allow to cool before serving.
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I can’t start thinking about kale with these beautiful brownies right in front of me! I thought I was done with mass amounts of sweets, but one look at these and I’m craving something chocolate-y again! These sound wonderful. I love peanut butter cups, so these are really my kind of brownies.
Haha, they are certainly tempting! Thank you, Amanda! 🙂
Oh my, these brownies look so good! Peanut Butter Cup and Oreo stuffed brownies – yes please!
They were SOOO good! Thank you, Marsha! 🙂
I’m trying to make them now and the 2nd step says to stir in oil but doesn’t say how much….help!
Oh no! I’m sorry, Carla, there isn’t supposed to be any oil, it’s just butter. It looks like I accidentally left that in from an earlier draft. I’m so sorry about that, it’s been fixed in the recipe!
Ooohhh these look SO good, Sam! These would make anyone lose self-control so don’t feel bad! I mean hellooo, brownies filled with peanut butter cups and oreos….YES PLEASE!! I think you deserve extra Christmas presents for the fact that these even made it onto the blog <3
YES! Haha, thanks so much, Beeta! 🙂
I am in love with this recipe! These brownies look so inviting and mouth- watering ♥
summerdaisy.net
Thanks so much, Summer! 🙂
Oh man. Reese’s + Oreos were my favorite childhood sweets. These look so incredible!!! I just posted a recipe for Oreo White Chocolate cookies and couldn’t stop eating them… These brownies are going to give them a run for their money!! 😮
Those cookies sound amazing, Melissa! Thank you! 🙂
I hate to sound stupid, but what size peanut butter cups?
Not a stupid question! They’re just standard Reese’s peanut butter cups, like the kind you’d get in the check out aisle of the grocery store. I hope you love them, Lyn!
I saw these and immediately knew I had to make them. Going out to buy the ingredients today so I can make them for a super delicious and yummy dessert tonight! So glad I stumbled across this recipe!
Awesome! I hope you love them, Jenn! 🙂
I’m planning to make these later today. However after reading your description, I feel that the serving size is off. :-).
Haha, in my house it’s about 2 servings 😉
Hello! These look amazing and I want to make but is 16C of sugar correct?
Hi! It’s only 1 2/3 cup sugar, but I did see that my recipe was saying “16 Cups Peanut Butter” when really it was supposed to say “16 Peanut Butter Cups”. I just updated my recipe plugin and it must’ve gotten mixed up there in the switch, it’s just supposed to be 16 Reese’s Peanut Butter cups. I hope that helps! 🙂
This is sex in a pan! Sinful!I love em ! I dont normally eat things mixed together or compilations of different foods touching , but here is the exception….slap yo mama good!