01 - Line two baking sheets with parchment paper or silicone mats to prevent sticking and facilitate easy cleanup.
02 - Combine chocolate chips, butterscotch chips, and butter in a large microwave-safe bowl. Microwave in 30-second intervals, stirring thoroughly after each interval, until completely melted and smooth, approximately 1–2 minutes total.
03 - Let the melted chocolate mixture cool for 2–3 minutes to prevent marshmallows from melting when incorporated.
04 - Fold peanuts and mini marshmallows into the cooled chocolate mixture until evenly distributed and fully coated.
05 - Using a tablespoon or small cookie scoop, drop rounded mounds onto prepared baking sheets, spacing approximately 1 inch apart to prevent merging.
06 - Allow clusters to set at room temperature for 2 hours or refrigerate for 30–40 minutes until firm and completely set.
07 - Transfer cooled clusters to an airtight container and store at room temperature for up to 1 week for optimal freshness.