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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 cup brownies are sliced into 16 squares on a piece of parchment paper with one brownie flipped to display the melted center
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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.

three reese's cup brownies are stacked on top of one another with a gooey peanut butter center displayed

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.

4.67 from 3 votes

Reese’s Cup Brownies

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.
Prep Time: 10 minutes
Cook Time: 40 minutes
Total Time: 50 minutes
Servings: 16 squares

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
    oil and eggs added to a clear bowl with brownie mix
  • Pour half the batter into the prepared baking pan and spread into an even layer with a spatula.
    a grey silicone spatula is spreading brownie batter into a parchment paper lined square baking pan
  • Place Reese's cups on top of the brownie batter. There should be 4 in each row.
    16 Reese's peanut butter cups
    16 reese's cups are added on top of the brownie batter in the square baking pan
  • 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.
    the remaining brownie batter is being poured on top of the reese's cups
  • 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.
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Nutrition

Serving: 1brownie (76 grams), Calories: 228kcal, Carbohydrates: 34g, Protein: 3g, Fat: 9g, Saturated Fat: 3g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 4g, Cholesterol: 1mg, Sodium: 154mg, Potassium: 58mg, Fiber: 1g, Sugar: 24g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.

The default measuring system for this website is US Customary. Unit conversions are provided for convenience and as a courtesy only. While we strive to provide accurate unit conversions, please be aware that there may be some discrepancies.

Photographs by Meg McKeehan Photography

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74 Comments

  1. cathy @ Noble Pig says:

    Wow, I wish you lived next door to me so I could come over and have one of these beauties!!

  2. thelittleloaf says:

    These look insanely good and I love the giant pictures – feels like I could reach into my screen and grab one (if only)!

  3. Sandra's Easy Cooking says:

    Oh my goodness..those are popping out of the screen! LOVE IT!

  4. Erin @ Dinners, Dishes and Desserts says:

    Seriously?! That few of kids? Our neighborhood is crazy busy on Halloween. We took our 7 year old out with a friend, and we turned down one street and there had to have been atleast 70 kids running around that block alone! It is a madhouse!

    Love these brownies, pb and chocolate is always the best!

  5. Hayley @ The Domestic Rebel says:

    Oh my gosh–I totally agree! I remember as a kid, my siblings and I had to push through throngs of dressed-up kids to beat them to the houses first… haha we had some kind of weird competition to get the most candy, I’m sure, and boy, did we! Heavy, heaping pillowcases full. And now… we handed out candy to MAAAAAYBE 10 kids. And that was AFTER we desperately recruited them from the street lol! Anyway, this is an awesome idea to reuse those Reese’s cups–and a brilliant one, let me say. They look so fudgy and delectable!

  6. Erin | The Law Student's Wife says:

    I didn’t even BUY candy for trick-or-treaters (we live in an apartment), but somehow still wound up with a massive quantity anyway! Thanks for the ooey gooey idea to help me solve my “problem.”
    And I totally know what you mean about parents being nervous–when I was younger, my mom literally opened the door and kicked us out for a few hours to go crazy!

  7. katie says:

    oh these look fab. we get over 100 kids each year and hardly ever have any candy leftover.

  8. Meagan @ A Zesty Bite says:

    I did the same thing with the candy! Except I packaged it up into 3 gallon size bags and sent it far far away! With me being pregnant I want to eat it all.

  9. Loretta | A Finn In The Kitchen says:

    We live in an apartment, so we don’t get trick-or-treaters either. And our daughter is still to little to go out. So Halloween pretty much didn’t exist for us this year. We were kind of party poopers.

    I love the look of these brownies!

  10. Cookbook Queen says:

    We’ve had the same experience with Trick Or Treat. This year, we went to our church to do a Trunk or Treat (where you decorate your trunks and pass our candy…we also give groceries and hot dogs out to needy families), because last year Jon David didn’t get any candy — noone was home!! Poor kid went to street after street and maybe got twelve houses total. However — at the church we passed candy out to almost a thousand kids!!

    You really can’t go wrong with Reeses and brownies. Ever.