Reese’s Peanut Butter Cup Brownies

I admit I am a chocolate and peanut butter fiend. There really is no other combination that makes me as weak in the knees as chocolate and peanut butter. So when I found myself loaded down with extra Halloween candy, I knew I had to get it out of my house! I took my favorite brownie recipe and threw in some chopped peanut butter cups. I had no idea I could make this brownie recipe better, but obviously I did! 😉

Chewy, fudgy double chocolate brownies studded with chunks of Reese’s Peanut Butter Cups. So rich, so chocolately, so delicious! If you love Reese’s Peanut Butter Cups then you are going to go crazy for these brownies! They are fudgy in the middle and chewy on the outside with a shiny, crackly top. Who can resist that? I know I can’t! 😉

Reese's Peanut Butter Cup Brownies

Chewy, fudgy double chocolate brownies studded with chunks of Reese's Peanut Butter Cups.

Yield: 24 brownies


1/3 cup Dutch-processed cocoa
1 ½ teaspoons instant espresso
1/2 cup plus 2 tablespoons boiling water
2 ounces unsweetened chocolate, finely chopped
4 tablespoons (1/2 stick) unsalted butter, melted
1/2 cup plus 2 tablespoons vegetable oil
2 large eggs
2 large egg yolks
2 teaspoons vanilla extract
2 ½ cups sugar
1 ¾ cups unbleached all-purpose flour
3/4 teaspoon table salt
12 regular size Reese's peanut butter cups, coarsely chopped


Preheat oven to 350F. Butter the bottom and sides of a 9×13 inch metal baking pan. Put a long piece of parchment paper in the bottom of the pan, letting the parchment extend up two sides of the pan and overhang slightly on both ends. Place another piece of parchment paper in the same manner, perpendicular to the first sheet. (This will make it easy to remove the bars from the pan after they have baked.) Butter the parchment.
In a large bowl, whisk cocoa, espresso powder, and boiling water together in large bowl until smooth. Add unsweetened chocolate and whisk until chocolate is melted. Whisk in melted butter and oil. Add eggs, yolks and vanilla and continue to whisk until smooth and homogeneous. Whisk in sugar until fully incorporated. Add flour and salt and mix with rubber spatula until combined.
Transfer 1/2 of the batter to prepared pan; using spatula, spread batter into corners of pan and smooth surface. Sprinkle with half of the chopped Reese's peanut butter cups. Spread the remaining batter in to the pan. Sprinkle with remaining Reese's peanut butter cups. Bake 30 to 35 minutes, or until toothpick inserted into the center comes out with just a few moist crumbs attached. Transfer pan to wire rack and cool 1½ hours.
Using parchment overhang, lift brownies from pan. Return brownies to wire rack and let cool completely, about 1 hour. Cut into 2-inch squares and serve.

Source: adapted from Cook's Illustrated's Chewy Brownies, March 2010

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25 Responses to “Reese’s Peanut Butter Cup Brownies”

  1. #
    Lisa — November 6, 2011 @ 10:38 am

    Those look amazing. I can’t wait to make them.

  2. #
    Chgo John — November 6, 2011 @ 12:04 pm

    These are too good. Peanut butter cups in chocolate brownies! I’ll go to bed tonight dreaming of these.

  3. #
    The Teenage Taste — November 6, 2011 @ 2:40 pm

    I have SO many Reeses cups leftover from Halloween. This is the perfect way to use them up. Mmmmmm…. :-)

  4. #
    Rufus' Food and Spirits Guide — November 6, 2011 @ 5:39 pm

    You have a thing for chocolate and peanut butter? YOU? Ha, kidding. These look fantastic.

  5. #
    Linda Ghostwriter — November 6, 2011 @ 5:53 pm

    Okay. Hurt me. This will satisfy a craving big time!

  6. #
    The Café Sucré Farine — November 7, 2011 @ 4:15 am

    Yum, what a great way to clear out some of the plethora of candy! I did this a while back with an over supply of Snickers. Yours look and wound quite delicious! Of course now this leaves you with a plethora of brownies! :)

  7. #
    mschristiner — November 7, 2011 @ 7:01 am

    Reese’s Peanut Butter cups are one of my favourite chocolates! Will have to try this :)

  8. #
    Bluejellybeans — November 7, 2011 @ 11:05 am

    Great recipe! I just need the reese’s :(

  9. #
    Erin — November 7, 2011 @ 11:10 am

    I bought sale Halloween candy, such as big bags of Reeses to stock up for glorious things such as this recipe, yay!

  10. #
    livingth3sw33tlife — November 7, 2011 @ 2:40 pm

    oh my cupcakes!! … these brownies deserve a moment of silence!! All that these are asking for is some yummy vanilla ice cream *drroool -worthy*

  11. #
    Krista {Budget Gourmet Mom} — November 7, 2011 @ 9:38 pm

    Definitely a match made in heaven! Our kids got tons of candy and I’m not sure how we will get through all of it! At least I have a good idea of what to do with all the peanut butter cups.

  12. #
    Irene @ H.V.R. — November 8, 2011 @ 4:18 am

    I love Reeses and I love this recipe. Thanks for sharing this great recipe. I now have other way too enjoy Reese chocolate.

  13. #
    claire @ the realistic nutritionist — November 8, 2011 @ 2:45 pm

    Perfect way to use up leftover Halloween candy! I am SO making this over the weekend.

  14. #
    Jen at The Three Little Piglets — November 8, 2011 @ 3:01 pm

    Peanut butter cups make everything better!

  15. #
    Emily @ Life on Food — November 8, 2011 @ 3:12 pm

    Those look so rich and dense. I kind of need some now. Seriously…looking good!

  16. #
    Lacy — November 8, 2011 @ 3:23 pm

    Oh man! There is no better candy than a Reese’s Peanut Butter Cup! These look and sound so incredible and extremely dangerous to be around (at least for me!) — irrisistable! Yum!

  17. #
    bakingjenn — November 8, 2011 @ 5:31 pm

    I would like to make these, but I can almost guarantee I’d end up eating the entire dish of them. They look THAT GOOD. Thanks for sharing :)

  18. #
    Baker Street — November 9, 2011 @ 1:16 am

    I’ve bookmarked this! Lovely recipe! Perfect for some weekend indulgence!

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  20. #
    RavieNomNoms — November 9, 2011 @ 2:54 pm

    These look absolutely amazing!! I would totally demolish those! YUM

  21. #
    iamahoneybee — November 12, 2011 @ 9:51 am

    chocolate and peanut butter… the perfect combo!

  22. #
    foodventuresandotherstories — November 13, 2011 @ 1:52 pm

    Sounds incredible. Thanks for sharing.

  23. #
    Chung-Ah | Damn Delicious — November 2, 2012 @ 10:02 am

    What a wonderful way to use up leftover halloween candy! And you’re right, there really is no combo better than peanut butter and chocolate!

  24. #
    Julie @ Table for Two — November 2, 2012 @ 10:36 am

    great minds think alike! I just made almost the exact same thing last night but i didn’t break up my reese’s..haha, i put them in whole – i’m posting on monday – i love that idea of breaking it up though so you get a bit of reese’s in every bite! love it :)

  25. #
    Hotly Spiced — November 2, 2012 @ 4:06 pm

    I love Reese’s peanut butter cups. We’ve only recently been able to buy them here in Australia. Now this is putting them to good use and I agree, we have to come up with ways of using up all that Halloween candy – fast! xx

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