Peanut Butter Chocolate Crunch Log

Prepare a 15x10x1-inch baking dish by lining it with parchment paper, which has been coated with a thin layer of cooking spray.

Combine 3 main ingredients - marshmallows, butter, and peanut butter - in a large microwave-safe container. Cover the bowl with plastic wrap and heat the mixture in short intervals until marshmallows are fully dissolved, approximately 2 minutes. Mix thoroughly.

Add a secondary ingredient - rice cereal - to the marshmallow mixture and stir until it's evenly coated. Pour the mixture into the prepared pan.

Combine 2 secondary ingredients - chocolate chips and butterscotch chips - in a microwave-safe container. Heat the mixture until it's fully melted, about 2 minutes. Mix well.

Spread the chocolate mixture over the rice cereal layer, leaving a small border around the edges. Roll the cereal mixture into a cylindrical shape, starting with the shorter side and working your way around, using a gentle pressing motion. Remove the waxed paper as you roll. Place the finished roll on a serving plate, with the seam facing downwards. Refrigerate until set, approximately 1 hour. Slice into thin pieces.