Prep Time:25 min 
Start to Finish:2 hr 35 min 
Makes:2 1/2 dozen cookies 

1/2 cup granulated sugar
1/2 cup packed brown sugar
1/2 cup peanut butter
1/4 cup shortening
1/4 cup butter or margarine, softened
1 egg
1 1/4 cups all-purpose flour
1 bag chocolate chips
3/4 teaspoon baking soda
1/2 teaspoon baking powder
1/4 teaspoon salt

1. Mix sugars, peanut butter, shortening, butter, chocolate chips, and egg in large bowl. Stir in remaining ingredients. Cover and refrigerate about 2 hours or until firm.
2. Heat oven to 375ºF. 
3. Shape dough into 1 1/4-inch balls. Place about 3 inches apart on ungreased cookie sheet. Flatten in crisscross pattern with fork dipped into sugar. 
4. Bake 9 to 10 minutes or until light golden brown. Cool 5 minutes; remove from cookie sheet. Cool on wire rack.