Peanut Butter Cookies

1/4 cup peanut butter
3 Tbsp. shortening
1/2 cup sugar
1 egg
2 1/4 cups flour
1 tsp. baking powder
1/4 tsp. soda
1/4 tsp. salt
1/4 cup sour milk

Cream peanut butter, shortening, and sugar together, to which add well beaten egg and re-cream. Sift flour, baking powder, soda and salt together and add to creamed mixture together with sour milk. Mix all well. Roll dough on floured board as thin as can be handled, always rolling sugar in on top of dough to give the cookies a sugar crusted top. Cut in fancy shapes and bake in quick oven. If sweet milk is to be used in this recipe, use 2 tsp. baking powder and leave out soda.