M&M Cupcakes with Peanut Butter Frosting

Servings 20 -24 cupcakes


M&M Cake:

  • 1 box white or yellow cake mix
  • 3 eggs
  • 1/3 C. oil
  • 1 C. milk or buttermilk
  • 1/2 C. sour cream or plain yogurt
  • 1 Tbsp. vanilla extract
  • 1 C. mini M&M's

Peanut Butter Frosting:

  • 1/2 C. smooth peanut butter
  • 1/2 C. butter softened
  • 2 tsp. vanilla extract
  • 3-4 C. powdered sugar
  • 2-4 Tbsp. milk

Extra M&M's to decorate


  1. 1. Preheat oven to 350 degrees and line pans with cupcake liners.
  2. 2. Sift cake mix into a small bowl and set aside.
  3. 3. In a large bowl, combine eggs, oil, milk, sour cream and vanilla extract.
  4. 4. Stir in cake mix until smooth.
  5. 5. Fold in M&M's. Don't overmix because the coloring from the candies will dye the cake.
  6. 6. Fill cupcake liners 3/4 full and bake for 17-22 minutes or until an inserted knife comes out clean.
  7. 7. Peanut Butter Frosting: Beat peanut butter and butter until smooth. Add vanilla extract and slowly add powdered sugar. The frosting will become chunky. With the mixer on low add milk 1 Tbsp at a time until the frosting becomes "fluffy" and smooth. Add more powdered sugar if needed or more milk.
  8. 8. Pipe onto cooled cupcakes an top with extra candies.