Crispy Peanut Butter Chocolate Log

Line a 15x10x1-inch jelly roll pan with waxed paper. Grease the waxed paper.

Combine marshmallows, butter, and peanut butter in a large microwave-safe bowl; cover bowl. Microwave until marshmallows are melted, about 2 minutes. Stir well.

Stir cereal into marshmallow mixture until well coated; spread into the prepared pan.

Combine chocolate chips and butterscotch chips in a microwave-safe bowl. Microwave until melted, about 2 minutes. Stir well.

Spread chocolate mixture over cereal mixture, leaving a 1-inch border around edges. Roll cereal mixture around chocolate filling, jelly-roll style, starting with a short side. Peel away waxed paper while rolling. Place roll, seam-side down, on a serving platter. Refrigerate until set, about 1 hour. Cut into narrow slices.