1/4 cup sugar 1/2 teaspoon cinnamon Filling: 1/2 cup powdered sugar 1/2 cup peanut butter Cookies: 1/2 cup shortening 1/2 cup peanut butter 1/2 cup sugar 1/2 cup brown sugar 1 egg 1 1/4 cups flour 3/4 teaspoon baking soda 1/2 teaspoon baking powder 1/4 teaspoon salt Preheat oven to 375º F.