Tie Dyed Fudge

Line 8-inch square pan with foil, leaving foil overhanging at 2 opposite sides of pan; spray foil with cooking spray.

In large microwavable bowl, microwave white chips uncovered on High 1 minute. Spoon frosting over chips. Microwave on High 30 seconds; stir. If necessary, continue to microwave in 15-second increments until mixture can be stirred smooth.

Divide mixture evenly into 4 small bowls. Add 1 color of food color to each bowl.

Spread green fudge mixture evenly in bottom of pan. (Mixture will be thin; spread as evenly as possible.) Gently spread blue mixture over green layer, again spreading as evenly as you can. Repeat layers with yellow and red mixtures.

Pull table knife through layers for marbled design. Smooth top with spatula. Cool completely. Cut into 8 rows by 8 rows.