Cupcakes, Desserts, Recipes

Peanut Butter Chocolate Cupcakes

One day about a month ago, I just felt like cake. Ever get that vibe?? I’m not normally one who needs cake to live and breathe but when the weather started cooling down and the semester started heating up, I had no choice but to whip these little bites of joy up on a Saturday afternoon.

And I am so glad I did… because you have to try these babies.

They’re like Reese’s, only 10 times better. Each bite fills your palate with moist chocolate cake, melt in your mouth peanut butter filling, and rich chocolate frosting. They are so satisfying that one really will be enough. And men complaining that cupcakes are too girly because you can eat them in one bite? Ummm, no; these definitely require a fork.  I used my favorite chocolate cake recipe and made some peanut butter balls to serve as rich, gooey filling, then topped everything off with fluffy frosting. In the interest of full disclosure, I did try a new frosting recipe that I do not recommend. It was melty and hard to work with, and frankly did not taste all that wonderful. So I’ve just provided a previous frosting recipe that is amazing, so feel free to use that or your own personal favorite.

Peanut Butter Chocolate Cupcakes [by Martha Stewart & The Pajama Chef]

makes 20



  • 3/4 cup
  • 1 1/2 cups all-purpose flour
  • 1 1/2 cups sugar
  • 1 1/2 teaspoons baking soda
  • 3/4 teaspoon baking powder
  • 3/4 teaspoon salt
  • 2 large eggs
  • 3/4 cup low-fat buttermilk
  • 3/4 cup warm water
  • 3 tablespoons oil [Martha suggests safflower, I used canola]
  • 1 teaspoon vanilla extract
  • pinch of salt


  • 1 cup powdered sugar
  • 1 cup creamy peanut butter [regular, not all natural]
  • 1 teaspoon vanilla
  • 2 tablespoons unsalted butter, softened


  • 1/8 cup unsweetened cocoa powder
  • 1 1/8 cups powdered sugar
  • 3 ounces cream cheese, softened
  • 1/4 cup unsalted butter (1/2 stick)
  • 3 ounces fat free sour cream
  • 3 ounces bittersweet chocolate, melted
  • 2 ounces milk chocolate, melted


Preheat the oven to 350 degrees. Line a muffin tin with 20 paper liners.

In an electric mixer, combine 3/4 cup cocoa, flour, sugar, baking powder, baking soda, and salt. Add eggs one by one, mixing in between to fully combine. Then gradually add in buttermilk and mix to fully incorporate. Repeat with water, oil, and vanilla. Once all ingredients are added, mix on medium speed until smooth and batter is free from any lumps.

Pour batter into paper liners 2/3 of the way full. Bake until a toothpick inserted in the center of the cake comes out clean, about 15 minutes. Place on cooling rack to cool for 5 minutes.

While cupcakes are cooking, make peanut butter filling. In an electric mixer, combine peanut butter, butter, and vanilla. Beat until fluffy, then gradually incorporate powdered sugar. Shape into 20 1-inch balls, place on a baking sheet, and freeze until ready to use. There will likely be excess peanut butter mixture… save it to dip in chocolate like Buckeyes candies or just to eat. Yum!

Then, use a serrated knife to cut a small hole in the top of the cupcake.

Scoop out a little filling and stuff peanut butter ball in the hole.

Repeat for each cupcake and then allow to cool completely.

Meanwhile… make that frosting.

In a small bowl, mix powdered sugar, cocoa, and salt. In the bowl of an electric mixer, combine cream cheese and butter until smooth and fluffy. Add cocoa mixture to cream cheese concoction in 1/3 cup increments, mixing until fully incorporated. Pour in the chocolate [it helps to melt it in a glass measuring cup with a spout] while mixer is turned on low, then add sour cream and beat until combined, scraping the sides as neccessary.

Frost the cupcakes once cooled and enjoy!

Click here for the printable version: Peanut Butter Chocolate Cupcakes

Question of the Day: What’s your favorite kind of cupcake? I have to admit, I’m really partial to funfetti. 🙂


8 thoughts on “Peanut Butter Chocolate Cupcakes”

  1. Wow. Seriously–WOW! I’ve made peanut butter chocolate pillow cookies, but it’s never occurred to me to stuff a chocolate cupcake with a delicious peanut butter ball! These look fabulous 🙂

    My favorite type of cake is definitely yellow–I’ll take it with chocolate or vanilla buttercream. Just NOT whippy icing–not a fan of the whippy stuff!


  2. I LOVE funfetti cupcakes (have you ever made the cookies – omg.) BUT these cupcakes you made look absolutely amazing. My sweet tooth is drueling right now!


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