Perfect Chocolate Chip Cookies

1 c. butter
3/4 c. white sugar
3/4 c. packed brown sugar
1 egg
1 tsp. vanilla
2 1/4 c. flour
1 tsp. baking soda
1/2 tsp. salt
Chocolate chips

Bake at 375 for 8-13 minutes.  These turn out every time!