cream the butter, sugar, and vanilla together with a mixer

slowly add the eggs and flour to the mixture

put the dough in the refrigerator for at least 1 hour to chill

roll into quarter sized balls and place on cookie sheet

smash the dough balls with the bottom of a water glass dipped in powdered sugar to keep the dough from sticking to the bottom of the glass

you may add sprinkles, red hots, nuts, etc to the top of the cookies at this point.

bake in oven at 350F for 8-10 minutes

let cool before removing from cookie sheet