Mix cookie butter, crushed Biscoff cookies, and powdered sugar (if using) until thick and smooth.
Cover and refrigerate for 30–40 minutes until firm enough to roll.
Scoop about 1 tablespoon of mixture and roll into smooth balls. Place on a parchment-lined tray.
Chill rolled truffles for 15 minutes.
Dip each truffle into melted chocolate, tap off excess, and place back on parchment. Add toppings if desired.
Refrigerate for 20–30 minutes until the coating is fully set.
Notes
• Chill well before rolling and dipping for clean shapes.
• Finely crushed cookies give the smoothest texture.
• Melt chocolate gently to keep it glossy.
• If mixture is too soft, add a little more crushed cookie.
• Best stored chilled for clean bites.