Add your Nutter Butter cookies into the bowl of a food processor and pulse them into fine crumbs. Set aside ¼ cup of the cookie crumbs for topping the truffles later.
Mix the softened cream cheese, ¼ cup peanut butter, and powdered sugar until smooth and creamy. Pour in the Nutter Butter cookie crumbs, then mix to form a dough consistency.
Line a baking pan with parchment paper or a silicone baking mat, then roll the mixture into balls roughly 1 inch in size, placing them on your prepared pan as you go. Transfer to the freezer to chill for 15 minutes.
In a microwave safe bowl, combine white chocolate chips and remaining peanut butter. Microwave in 30 second intervals, stirring in-between, until melted and smooth.
Working one by one, coat each Nutter Butter truffle in melted chocolate, let any excess chocolate drip off, then return to the baking sheet.
Immediately sprinkle with the reserved cookie crumbs from earlier, then let the chocolate coating set completely before enjoying!