Line a large baking sheet with parchment paper. Set aside.
Add chocolate to a large microwave-safe bowl and microwave on high in 20-second intervals, stirring after each interval, until melted and smooth.
Set the melted chocolate aside to cool slightly (about 3 minutes).
Fold the roasted peanuts into the melted chocolate. Mix until fully coated.
Drop 1 spoonful of the mixture onto the lined sheet. Repeat with the remaining mixture.
Refrigerate at least 20 minutes, or until set.
Refrigerate the chocolate peanut clusters in an airtight container for up to 1 month.