1. Line a 15 x 10 x 1-inch baking pan with foil. Coat with nonstick cooking spray. Place chips in a large glass bowl. Microwave at 60% power for 1 minute. Stir. Repeat, stirring until smooth.
2. Place candies in a quart-size resealable plastic bag. Place bag inside a gallon-size resealable bag. Crush with a meat mallet or heavy saucepan.
3. Fold half the crushed candies into melted chocolate. Pour onto prepared pan, spreading almost to edge of pan. Sprinkle top with remaining crushed candies. Refrigerate until firm, about 1 hour. Break apart into bite-size pieces.