Go Back
Peanut Butter Oatmeal cookies with chocolate frosting sandwiched in between make a great on the go treat.
Print Recipe
5 from 1 vote

Peanut Butter Chocolate Sandwich Cookies

Peanut Butter Chocolate Sandwich Cookies are rich chocolate buttercream sandwiched between two chewy peanut butter oatmeal cookies. These are just like a good old fashioned peanut butter bar, just in sandwich form! 
Prep Time10 minutes
Cook Time10 minutes
Cooling Time15 minutes
Total Time35 minutes
Course: Dessert
Author: Karli Bitner

Ingredients

Peanut Butter Oatmeal Cookie

  • 1/2 cup butter room temperature
  • 1/4 cup crunchy peanut butter
  • 1/2 cup sugar
  • 1/2 cup brown sugar
  • 2 eggs
  • 1 tsp vanilla
  • 1 3/4 cup flour
  • 3/4 tsp salt
  • 1 cup rolled oats

Chocolate Buttercream

  • 1/4 cup butter
  • 2 1/2 tbsp cocoa powder
  • 1 1/2 cups powdered sugar
  • 2 tbsp chocolate pudding powder
  • 1 1/2 tbsp milk
  • 1 tsp vanilla

Instructions

Peanut Butter Oatmeal Cookies

  • Preheat oven to 350°.
  • Cream together butter, peanut butter and sugars. Cream for 3 minutes, the mixture will be light and fluffy.
  • Scrape the sides of the bowl and add in the eggs and vanilla. Mix until combined.
  • Add the flour, salt and rolled oats to the bowl and mix thoroughly.
  • Scoop the cookie dough out onto a parchment paper lined cookie sheet.
  • Bake for 8-10 minutes, or until the edges barely start turning brown. The cookies probably won't change shape much while cooking, that is okay.
  • Right after the cookies are pulled out of the oven, take the back of a glass drinking cup and smash the cookies flat. Let them cool on the hot pan.

Chocolate Buttercream

  • Place all ingredients into the bowl of a stand mixer. 
  • Using the paddle attachment, starting slowly, combine the ingredients.
  • Once the ingredients are mostly combined, turn the speed up as high as possible and let the buttercream whip for a few minutes until light and fluffy.

Assembly

  • Each sandwich will use two cookies.
  • Frost the backside of one cookie with a generous amount of frosting.
  • Top the frosting with another cookie. The backsides of the cookies should be touching the frosting, so the pretty side of the cookie is facing out.