Peanut Butter Cookies

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Ingredients:
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1 block butter or margarine
1/2 cup peanut butter
1/2 cup white sugar
1/2 cup brown sugar
1 egg
1/2 tsp vanilla
1-1/4 cups flour, sifted
1/2 tsp baking powder
3/4 tsp baking soda
1/4 tsp salt

Instructions:
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Mix shortening, peanut butter, sugars, egg, and vanilla thoroughly. 
Sift dry ingredients and add to creamed mixture and mix well. Chill
dough for one hour. Roll into balls the size of walnuts. Place 3
inches apart on lightly greased baking sheet. Flatten with fork dipped
in flour, crisscross. Bake at 375 degrees for 10-12 minutes.