1 c. sugar
1 c. packed brown sugar
1 c. butter, softened
1-1 1/2 c. peanut butter
2 eggs
2 1/2 c. all-purpose flour
1 1/2 tsp. baking soda
1 tsp. baking powder
1/2 tsp. salt

Mix first 5 ingredients. Mix well. Then add rest of ingredients. Heat oven to 350 degrees. Shape dough into 1 1/4 inch balls. Place about 2 inches apart on cookie sheet. Flatten in criss-cross pattern with fork dipped in flour. Bake 10-12 minutes.