1/2 cp sugar
1/2 cp packed brown sugar
1/4 cp butter, softened
1/4 cp shortening
1/2 cp plain yogurt
1 1/2 tsp vanilla
1 3/4 cp flour
1/2 tsp baking soda
1/2 tsp salt
1/2 cp chocolate chips

Combine first 4 ingredients – beat until light and fluffy, then add yogurt and vanilla. Blend well. Stir in flour, baking soda and salt. Mix well. Add chocolate chips. Drop dough 2 inches apart on cookie sheet. Bake @ 375 for 8-12 minutes.