1/3  cup granulated sugar
    1/3  cup packed brown sugar
    1/2  cup peanut butter
    1/2  cup margarine or butter, softened
        1  egg
1-1/4  cup flour
    3/4  teaspoon baking soda
    1/2  teaspoon baking powder
    1/4  teaspoon salt

Mix sugars, peanut butter, margarine and egg.  Stir in remaining ingredients.  Cover and refrigerate at least 3 hours.
   Heat oven to 375F.  Shape dough into 1-1/4 inch balls.  Place about 3 inches apart on ungreased cookie sheet.  Flatten in crisscross pattern with fork dipped in flour.  Bake until light brown, 9 to 10 minutes.  Cool 2 minutes; remove from cookie sheet.
YIELD: 3 dozen cookies