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Ingredients
  

  • 2½ cups butter
  • 8 cups powdered sugar
  • 3 cups Oreo crumbs about 30 Oreos
  • 1 teaspoon vanilla extract
  • 3 tablespoons milk
  • Optional:
  • Extra Oreo crumbs for garnish
  • Mini Oreo cookies for garnish

Instructions
 

  • In the bowl of an electric mixer, fitted with the wire attachment, beat together butter until smooth.
  • Slowly add 4 cups of powdered sugar and mix until smooth. Pause to scrape the sides of the bowl. Add vanilla extract, Oreo crumbs and remaining sugar, mix until smooth.
  • Add milk 1 tablespoon at a time, until you get a smooth, desired consistency.
  • Use immediately or cover and refrigerate up to three days. To use, once refrigerated, slowly allow to reach room temperature and then beat on low speed for just a few minutes, until the buttercream is smooth before using.