Peanut Butter Cookies

1/2 cup shortening 
1/2 cup peanut butter 
1/2 cup sugar 
1/2 cup brown sugar 
1 extra-large egg 
1 1/4 cups sifted flour 
1/4 tsp baking soda 
1/2 tsp baking powder 
1/4 tsp salt 


Cream shortening and peanut butter until blended; gradually add sugars;
 beat until fluffy. 
Agg egg and beat thoroughly. 
Sift remaining ingredients together; divide in half and add to creamed mixture, 
one at a time, mixing till well blended after each addition. 
Shape dough into 1 1/4-inch balls and place 3 inches apart on lightly greased 
cookie sheets. 
Flatten with fork making criss-cross pattern, or use cookie stamps. 
Bake at 375F for about 10 minutes.