In a large mixing bowl, prepare cupcake batter according to the package directions.
1 box White cake mix (and required ingredients: egg, oil, water)
Crush 10 Oreo cookies into large chunks and fold them into the cupcake batter.
44 Oreo cookies
Line a muffin tin with cupcake liners.
Pour cupcake batter into prepared cupcake pan (each about 3/4 full) and bake as directed on the box.
Place cupcakes on a wire cooling rack to cool completely after baking.
In a large bowl, beat the butter with a hand mixer on medium speed until smooth.
1 cup Butter
Add the powdered sugar, 1 cup at a time, mixing in between each addition. The frosting will still be powdery. Add milk and vanilla extract and mix on high speed until well combined.
4 cups Powdered sugar, 2 teaspoons Vanilla extract, 2 tablespoons Milk
To make the frosting, add 10 Oreo cookies to your food processor and process until fine crumbs have formed. Set the Oreo crumbs aside.
Add crushed cookies to the frosting and mix a few seconds more to combine.
Using a piping bag and your favorite frosting tip, pipe the frosting onto the cupcakes.
Top each cupcake with one of the remaining 24 Oreos.