Add cookie mix, butter and egg to a mixing bowl and mix well until combined. Fold in 1 cup candies. Spread evenly into prepared pan and gently press with your fingertips or back of a spoon.

Bake for 10-14 minutes or until center is set and edges begin to brown. Cool Completely.

Place frosting into a pastry bag fitted with a star tip. Pipe icing onto the cookie, as if it was a clock, beginning at 12, 3, 6, 9 and filling in the spaces in between. Sprinkle with additional candies, sprinkles and icing decorations. Slice and serve immediately or cover and store at room temperature until ready to serve.

Serves 16.