Heat oven to 350°F. Spray 48 mini muffin cups with cooking spray. Place 1 cookie dough round in each muffin cup.
Bake 12 to 15 minutes or until light golden brown.
Using end of wooden spoon, carefully press into center of each cookie to make 1-inch-wide indentation. Cool completely.
Meanwhile, in large bowl, beat cake mix, water, oil, eggs and red food color with electric mixer on low speed 2 minutes, scraping bowl occasionally (do not overbeat).
Fill each cooled cookie cup 3/4 full with cake batter.
Bake 15 to 20 minutes longer or until toothpick inserted in center comes out clean. Remove from muffin cups onto cooling racks. Cool completely, about 30 minutes.
Frost tops of cookie cups with frosting.