HEAT oven to 350 degrees F. Coat provided baking trays with no-stick cooking spray. Place on baking sheet. PREPARE brownie mix according to package directions using the water. Fill prepared tray with about 1 tablespoon batter in each cup. BAKE 15 minutes. Remove from oven. Immediately press a peanut butter cup into each brownie. Refrigerate 30 to 40 minutes or until chocolate is set. Remove by running knife around each brownie bite and lifting out of cup.