Line a large cookie sheet with parchment paper.
Melt milk chocolate (start with 1 min. on 50% power; stir, then 30 sec. increments on 50% power). Stir well and often. Do NOT scorch. Spread over parchment paper. Spread thin…you’re adding two more layers and toppings.
Melt peanut butter chips. Spread over milk chocolate.
Melt white chocolate. Spread over peanut butter chocolate.
Use knife to add some swirls.
Press graham crackers, marshmallows, Hershey’s, and Reese’s over white chocolate. Press down lightly.
Refrigerate at least 1 hr. until cool and completely set. Break into pieces and serve.