I got this recipe from www.howsweeteats.com She has amazing recipes, so stop by her and check them out!
1 batch brownies (boxed mix or oooey gooey brownies)
1/2 cup salted peanuts (if don’t have salted, add sea salt)
1 cup chopped Reese’s peanut butter cups
1 1/2 cup milk chocolate chips
1 1/2 cup creamy peanut butter
1/2 tablespoon butter
1 1/2 cups Rice Krispies Cereal
Mix brownies according to directions, and bake for 20-25 minutes in a 9 x 13 baking dish. Remove and top with peanuts and peanut butter cups, and bake for 4-6 minutes more.
While they are finishing baking, melt chocolate chips, peanut butter and butter. Stir in cereal. Remove brownies from oven and evenly pour chocolate mixture over top.
Refrigerate for 2 hours before serving.