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Sandwiching a Reese’s peanut butter cup between a fudgy, chewy brownie may be one of the world’s most decadent desserts ever created to elevate a boxed brownie mix. Reese’s cup brownies are the perfect excuse to buy Reese’s peanut butter cups or to use up leftover Halloween candy.

Reese’s Brownies: Peanut Butter and Chocolate Heaven
Can you name a better combo than peanut butter and chocolate? The fact that these peanut butter brownies exist prove that this duo is simply delicious and perfect. This will satisfy all your peanut butter and chocolate cravings and not to mention, help you out a bit when you’re sifting through all that Halloween candy and wondering what else you can do with all those Reese’s peanut butter cups! I mean, it’s a ‘let me help you’ situation here. It’s also a great surprise to those expecting a regular ole brownie and get a sweet surprise!
These totally irresistible Reese’s brownies only take one bowl, your favorite brownie mix, and Reese’s peanut butter cups! Now, go find yourself some Reese’s peanut butter cups and get baking! Serve these with an iced shaken espresso as an afternoon pick-me-up.

Peanut Butter Brownie Variations
- You can choose to make the brownie batter from scratch, but honestly, brownie mixes these days are so good that you wouldn’t miss out by grabbing a box. Plus, there are boxed brownie hacks that allow you to doctor up the brownies and make them even more decadent and rich.
- Add even more peanut butter flavor in every bite by sprinkling peanut butter chips into the batter before baking!
- There are so many varieties of Reese’s brownies now. I particularly love the dark chocolate peanut butter ones. Also, around different holidays, they have different shaped ones. For example, around Halloween they have the pumpkin-shaped Reese’s peanut butter cups. You can use whichever in this Reese’s brownie recipe!
Storage Instructions
These peanut butter brownies will last up to 4 days at room temperature if covered and wrapped tightly!
Pro tip: zap them in the microwave for 10-15 seconds to have a warm, gooey, center.

Reese’s Cup Brownies
Equipment
Ingredients
- 18 ounce (510 g) box of your favorite brownie mix
- 16 Reese's peanut butter cups
Instructions
- Preheat oven to 350 °F (177 °C) and grease a 9×9 baking pan with cooking spray and line with parchment paper. Set aside.
- Mix together brownie mix with ingredients according to the box to form the brownie batter.18 ounce (510 g) box of your favorite brownie mix

- Pour half the batter into the prepared baking pan and spread into an even layer with a spatula.

- Place Reese's cups on top of the brownie batter. There should be 4 in each row.16 Reese's peanut butter cups

- Pour the rest of the brownie batter on top of the Reese's cups, covering them. Spread the batter gently with a spatula to make sure everything is covered.

- Bake for 35-40 minutes then remove from oven and let brownies cool in pan until room temperature.
- Using a paring knife, run it around the edge of the pan to loosen the brownies. Slice into squares, you should get 16 so each brownie square has a Reese's peanut butter cup in the center.
- Store in airtight container for up to 4 days at room temperature.
Nutrition
Photographs by Meg McKeehan Photography











Oh hubs definitely needs to stay away from this. He’s so addicted to Reeses. Looks so yummylicious and I just can’t stop looking at those lovely pictures. BTW, it’s so true that Halloween is different these days. We had no kids knocking on the door and we live in a secluded area. Thankfully….I didn’t prepare candy, completely forgot, lol.
Awww I’m sorry not many kids came by but it looks like you put great use to the leftover candy! These brownies are absolute sinful!
I had ONE knock on Halloween. ONE. Thank goodness I was that horrible person who opted to just not buy candy at all so I didn’t have loads of it around – but now, I don’t have loads of candy around so I can’t make THESE!! AHHH Catch 22!!! Noooo!
Need. these. Yesterday.
I think I just gained 5 lbs just looking at these brownies… totally worth it by the way! :P
These brownies look so, so delicious!!
Very Very brilliant, indeed. If only I didn’t eat all the Reese’s plain…
Uhh… HELLO BROWNIE. I shall devour you now.
I loved Halloween as a kid! I would be so excited to pass out candy when I get older. I hope kids will go out more.
What a great way to use up leftover Halloween candy! And, er… stretch it a little further ;)
YUMMM! I love Reese’s in brownies!! These will surely brighten anyone’s Monday :)
It’s funny, when I was handing out candy I was torn between handing them two giant handfuls or just a few pieces – part of me wanted to get rid of it since there weren’t many kinds out and about, and the other part of me was worried that we would run out…strange, I know!
I agree with someone above who said they don’t know if they could save enough Reese’s to cook these with…. they are my fave!! I’ve gotta try these though, they sound so decadent and delicious!