Chocolate chip cookies v.2

1/3 cup butter
1/3 cup margarine
1/2 cup packed brown sugar
1/2 cup granulated sugar
1 teaspoon vanilla
1 egg
1 1/2 cup flour
1 teaspoon baking soda
1 scant teaspoon salt
chocolate chips

Bake at 350 for 6-10 minutes.

recipe adapted from www.natthefatrat.com