Press sugar cookie dough onto the bottom of a rimmed 9x11 sheet pan. Bake for 15-18 minutes until cookie has turned golden brown and is cooked throughout when tested with a toothpick. Remove from oven and allow to cool completely.
Spread a thick layer of frosting on top of cooled cake. Place eyeballs of varying sizes all over the top of the cake. Press in gently to secure the eyeballs on the cake and to make them appear to pop out a bit.
Store covered or cut and in an airtight container.