Butterfinger Cupcakes

My husband absolutely LOVES Butterfingers. They are one of his most favorite candy bars. I didn?t know this until a month or two ago, so I surprised him with these Butterfinger cupcakes! With a doctored cake mix to make the bottom moist, and a peanut butter buttercream frosting to top it off, they are now a staple at every special occasion at our house!

Serves: 24

Butterfinger Cupcakes

These Butterfinger Cupcakes have use a doctored cake mix, so they turn out nice and soft every time! Plus, the peanut butter buttercream frosting on top really makes them turn heads! 😉

20 minPrep Time

20 minCook Time

40 minTotal Time

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  • 1 15.25-oz yellow cake mix
  • 3 eggs
  • 1/2 cup oil
  • 3/4 cup milk
  • 1/2 cup sour cream
  • 2 teaspoons vanilla extract
  • 2 regular sized Butterfinger candy bars
  • Frosting:
  • 2 cups (4 sticks) unsalted butter, at room temperature
  • 1/4 cup creamy peanut butter
  • 4-5 cups powdered sugar
  • 2 tablespoons vanilla extract
  • 1 bag Butterfinger bites for topping


  1. Preheat oven to 350 degrees and line pans with cupcake liners.
  2. In a large bowl, use a cheese grater to grate the Butterfinger candy bars into fine crumbs (reserving a small bit to use for toppings). Add the eggs, oil, milk, sour cream, and vanilla extract and mix until thoroughly combined.
  3. Add in the cake mix and stir until smooth.
  4. Fill cupcake liners about 3/4 of the way full, then bake for 18-22 minutes until a toothpick inserted comes out clean.
  5. Frosting:
  6. Whip the butter on medium-high for a good 4-5 minutes, stopping to scrape the bowl once or twice.
  7. Reduce the speed to low, and slowly add the powdered sugar. You can add more or less powdered sugar depending on how thick you want your icing.
  8. Once the powdered sugar is all incorporated, add in your peanut butter and vanilla.
  9. Increase the speed to medium-high and whip until light and fluffy (about two minutes).
  10. Top cupcakes with frosting, a Butterfinger bite and leftover grated butterfinger.

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12 Responses to “Butterfinger Cupcakes”

  1. Melissa
    Butterfinger cupcakes? These look way better than some of the things they come up with on cupcake wars (because of the weird ingredients they use!) I love Butterfingers, and I am excited to try your doctored up cake mix, too!
  2. These were amazing! I did substitute Greek yogurt for sour cream and used only 1 bar of butterfingers. I also made half the batter into mini cupcakes and that was a huge hit with the toddlers (who basically just lick off the frosting and mush up the cupcake anyway.) I had a ton of frosting leftover and will probably cut in half next time. Great recipe!!

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