Brownie Bites with Fluffy Peanut Butter Frosting

Brownie Bites with Fluffy Peanut Butter Frosting
frosting found at Allrecipes

Brownie Bites
1 boxed brownie mix (I think chocolate cupcakes would be yummy too)
1 cup Reeses Peanut Butter chips (optional)

Peanut Butter Frosting
1/2 cup butter, softened
1 cup creamy peanut butter
3 tablespoons milk, or as needed
2 cups confectioners' sugar

Make brownie mix according to package directions. Add peanut butter chips if desired. Pour into paper lined mini muffin pans filling each cup about 3/4 full. Bake 14-18 minutes at 350 degrees or until toothpick comes out clean. Cool.

Place the butter and peanut butter into a medium bowl, and beat with an electric mixer. Gradually mix in the sugar, and when it starts to get thick, incorporate milk one tablespoon at a time until all of the sugar is mixed in and the frosting is thick and spreadable. Beat for at least 3 minutes for it to get good and fluffy. Frost brownie