"the" chocolate chip cookie recipe

2/3 c butter
2/3 c shortening
1 c sugar
1 c brown sugar
2 eggs
2 tsp vanilla
3 c flour
1 tsp baking soda
1 tsp baking powder
1 c nuts (optional)
12 oz (1 bag) chocolate chips.

heat oven to 375. cream butter, shortening, sugars and eggs. add vanilla, then dry ingredients. add chocolate chips last.

drop by rounded teaspoons (i use a "coffee" spoon) 2 inches apart on an ungreased cookie sheet. bake 8-10 min. cool on wire racks or brown paper.