Crispy Rice Circus Treats

Spray a 9-inch baking pan with nonstick cooking spray.

Melt butter in a large saucepan over medium-low heat. Add marshmallows; stir until melted. Mix in food coloring. Add rice cereal and half of the nonpareils, stirring until cereal is coated.

Press cereal mixture into the prepared pan. Top with remaining nonpareils. Once set, cut into 1-inch squares.