I’ve been trying to get my brain around the idea of peanut butter and jelly cupcakes for awhile now. I’ve agonized over the hows and whys in my mind–where the jelly would go, what kind of jelly I would use, what flavor of cupcakes, yada yada yada. And then, out of nowhere as I was lying in bed awake and hungry, the simple solution came to me: why use jelly when you can use chocolate? I think that rule can pretty much be applied to all areas of life. Honestly, I’m kind of shocked it’s taken me this long to come up with this one–it’s not like no one’s ever put peanut butter and chocolate together. Enter Chocolate Peanut Butter Cupcakes.
I really am not much of a semi-homemade kind of girl–I really do make almost everything from scratch. But when it comes to cupcakes, doctored-up cake mix cupcakes really are my favorite way to go. They’re quick, easy, delicious, and fail-proof, regardless of elevation, humidity, or political affiliation. My only snobbery when it comes to doctoring up cake mixes is that I will only use Duncan Hines cake mixes (and they don’t even pay me to say that…in fact, I’m pretty sure I’ve never had a conversation with anyone affiliated with Duncan Hines). You’ll need a white or yellow Duncan Hines cake mix as well as canola oil, 3 eggs, sour cream, vanilla, small Reese’s Peanut Butter Cups, and peanut butter. 
Preheat your oven to 350 and line 2 12-opening muffin tins with cupcake liners. Set aside.
Combine all the ingredients except the peanut butter cups in a large bowl and beat with an electric mixer on medium-low for 30 seconds, scraping the bottom and sides often, then beat on high for 3 minutes.
Fill each cupcake liner about 1/3 full with cupcake batter. Top with an unwrapped mini Reese’s Peanut Butter Cup, 
and then top the Peanut Butter Cups with the remaining batter. You want to make sure that the candy is covered and the liner is about 3/4 full.
Bake the cupcakes in the preheated oven for 18-22 minutes or until they are golden on top.
Remove them from the oven and let them cool completely.
While the cupcakes are cooling, you’ll want to get the frostings ready. Yep, that would be “frostings.” Plural. It’s hot and Friday and the end of summer and your kids are fighting–I promise, you need frostings. For these cupcakes, I used the peanut butter frosting from these cookies and then the chocolate frosting from the infamous Tim Riggins Brownies.
Why that chocolate frosting, you ask? Mostly because between that frosting, this one, and this one, Mr. Riggins’ frosting is the quickest, easiest, and I always have those ingredients. Plus, the Old-Fashioned Chocolate Frosting is awesome, but it totally deserves to be the star of its own show rather than in an ensemble production, you know?
When the cupcakes have cooled completely, use this tutorial to frost your cupcakes.
Squeeze a dollop of remaining frosting onto your finger, lick it, and ponder the wonder of the forthcoming school year, then pour a few glasses of milk and watch your kids ponder the wonder of you and your awesome cupcakes.

Chocolate Peanut Butter Cup Cupcakes
Ingredients
For the Cupcakes
- 1 Duncan Hines yellow or white cake mix
- 1 cup sour cream full-fat or light, but not fat-free
- 3 eggs
- 1/4 cup canola oil
- 3/4 cup creamy peanut butter
- 1 teaspoon vanilla
- 24 unwrapped mini Reese’s Peanut Butter Cups
For the Chocolate Frosting
- 1/4 cup melted butter real butter, not margarine
- 3 tablespoons unsweetened cocoa powder
- 1/2 pound powdered sugar
- 3 tablespoons evaporated milk
- 1/2 teaspoon vanilla extract
For the Peanut Butter Frosting
- 1/2 cup creamy peanut butter
- 1/4 cup real butter softened
- 2 cups powdered sugar
- 1 teaspoon vanilla
- 2-3 tablespoons or more of milk (you can use some of the leftover evaporated milk; it’s awesome in this frosting)
Instructions
- Preheat oven to 350. Line 2 12-cup muffin tins with cupcake liners and set aside.
- In a large bowl, combine all the cupcake ingredients except for the peanut butter cups with an electric mixer on medium-low speed for 30 seconds, scraping the bowl frequently. Turn the speed to high and beat for another 3 minutes.
- Fill each muffin cup about 1/2 full with batter. Top with an unwrapped Reese’s Peanut Butter Cup , then fill the muffin cups with the remaining batter. Make sure the Peanut Butter Cups are covered and the cups are about 3/4 full. Bake for 18-22 minutes or until the tops are golden. Remove from the oven and allow to cool completely.
- While the cupcakes are cooling, prepare the frostings. For both frostings, just combine all the ingredients for each one and whip until light and fluffy, adding additional milk as needed. Frost the cupcakes with the swirled frosting in tutorial linked to below.
Use this tutorial to frost your cupcakes!













Questions & Reviews
Whoa lightning just struck my brain! I could use caramel instead of peanut butter! Oh yeah it is on! 🙂
Did you try the carmel? I bought some Rolos last night because my daughter has a peanut allergy. But then I got thinking about it and the rolo might be hard when the cake cools. What do you think?
Oh man I want to make these so bad. But I don’t think I will it is too mean. My 3 year old has a peanut butter allergy so that would not be nice to make cupcakes and NOT let him have any. 🙁 BOO!
Why do you do this to us?! Every single thing you make is soooo delicious and soooo fattening…and looks too good to resist!
Okay, how could you resist making these with chocolate cake? And just peanut butter frosting? Of course any combo of cake+peanut butter+ chocolate works for me!
I already responded to this delectable post once, but I have a quick question. Do you think these are something I can take to a cookout and leave outside for a few hours? It will be shady but 90 degrees. I am worried about melting icing.
Kelsey, cupcakes are always a tricky option for a hot-weather picnic. That would have to be up to you; frosting can certainly get warm and melty!
MMMMMMMMMMMM!!!!!!!!!!! OOOOOOOOOOOOhhhh-AWWWWWWwwww!!!! Can’t wait for an excuse to try these!! I have to have something to take them to, I can tell I’d eat them all myself otherwise!!
rachel, i think you’re my new best friend. LMBO!!
I’m crying– literally crying 🙂 These may be the most beautiful things I’ve ever seen.
Oh my GOODNESS this looks DIVINE! I may have to cancel my date with my husband tonight to make these ;). Thanks for sharing!
I think we need to see what the inside of this cupcake looks like. As if I need to be more convinced to make them. 🙂