Line a 15x10x1-in. pan with parchment; set aside. , In a double boiler or metal bowl over hot water, melt chocolate until about two-thirds of chips are melted. Remove from heat; stir until smooth. Stir in 1/4 cup each Reese's pieces, peanut butter cups and peanuts. Spread into prepared pan; top with remaining ingredients, pressing lightly to adhere (pan will not be full). Refrigerate until firm, 15-20 minutes. Break or cut into pieces. Store in an airtight container.