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Rainbow peanut butter cookie cups in the shape of a rainbow with mini marshmallows at the end, graphic title on the bottom right.

Rainbow Peanut Butter Cookie Cups {Virtual Baby Shower!}

Author Dorothy Kern


For the Rainbow Peanut Butter Cups

  • 36 Reese’s peanut butter cups , unwrapped
  • Candy melts in rainbow colors (or desired colors, think Christmas, Valentines, 4th of July...)

For the Cookies

  • 1/2 cup butter , softened
  • 3/4 cup peanut butter
  • 3/4 cup brown sugar
  • 1/4 cup white sugar
  • 1 egg
  • 1 teaspoons vanilla
  • 1 tablespoon milk
  • 1/4 teaspoon salt
  • 1 teaspoon baking soda
  • 1 1/2 cups flour
  • 36 Reese’s Peanut Butter cups (Colored optional)


Make the rainbow peanut butter cups:

  • Melt candy according to package directions. You need about 1/2 cup of melts per 6 peanut butter cups.
  • Dip peanut butter cups into melted colored candy and tap off excess. Place on a wax paper lined cookie sheet and chill until hardened. This can be done a day ahead of time.

Make the cookies:

  • Preheat oven to 350 degrees. Spray mini muffin pans (36 cavities) with cooking spray.
  • Cream butter and peanut butter until mixed. Add sugars and cream until fluffy. Beat in egg, vanilla, milk and baking soda. Slowly mix in flour until dough comes together.
  • Scoop 1 tablespoon of dough into each mini muffin cup. (Optionally, you could roll each cookie into a ball and drop it into the muffin pans. This will make them “prettier”.)
  • Bake for 8-9 minutes, until they just start to turn golden brown. While they are hot, place a peanut butter cup in the center of each. Cool completely (let the candy harden) before removing from pan. To remove, us a butter knife to carefully loosen the cookie from the pan. It should pop right out!


*Dipping the peanut butter cups in colored candy is optional, but pretty!
*If you don’t have colored candy melts, you can use white melts or almond bark and color it using candy coloring (NOT food coloring).
*Tip: make yellow and red first. Then mix for orange, etc.
*These freeze well, between layers of paper towels.