Becky left a comment about another brownie idea a la our friend Miriam.
1 box brownie mix (plus everything you need according to recipe)
1 bag Reese's Peanut Buttter Cups
Preheat oven to 350 degrees (or whatever is on brownie mix). Grease bottom of pan. Line bottom of pan with Reese's Peanut Butter Cups. Mix brownies according to recipe on box. Pour over Reese's. Bake according to box.
Thanks for the suggestion!