Sour Cream Cookies

2 cups brown sugar
2 cups granulated sugar
1 cups vegetable oil
8 oz. sour cream
4 eggs
2 teaspoons baking soda
1 teaspoons salt
4 teaspoons vanilla
6 cups flour
12 oz. chocolate chips, optional
1 cups nuts, optional

Preheat oven to 350F. Combine ingredients in order given. Drop dough by tablespoonfuls onto cookie sheet. Bake 15 minutes.