Heat oven to 350°F. Line bottom and one side of 9-inch square pan with cooking parchment paper or spray pan with cooking spray. In medium bowl, break up dough; stir in flour until well mixed. Press dough in pan.
Bake 15 to 18 minutes or until edges are light brown. Remove from oven; prick crust in several places with a fork. Sprinkle with chips; let stand a few minutes or until chips are softened, then spread with a knife. Sprinkle crushed candies over melted chocolate.
Cool completely; lift bars from pan. For squares, cut into 4 rows by 4 rows.