Prepare Your Baking Sheet: Start by lining a baking sheet with parchment paper or spray a mini muffin tin with cooking spray.
Melt the Dark Chocolate: In a microwave-safe bowl, combine the dark chocolate and peanut butter if using. Microwave in short bursts, stirring frequently until smooth.
Combine Ingredients: Once melted, gently fold in the puffed quinoa until all pieces are evenly coated with the chocolate mixture.
Shape and Garnish: Spoon the chocolate-covered quinoa mixture onto your prepared baking sheet or mini muffin tin, pressing down slightly. Sprinkle flaky salt on top if desired.
Allow to Set: Place your baking sheet or muffin tin in the refrigerator for about 30 minutes or until set completely.
Enjoy Your Treats: Once set, remove from the fridge and break apart or pop out of the muffin tin.