1Sift flour, soda, and salt together. Then cream together butter and peanut butter. Gradually add both sugars. Creaming well, add: egg and vanilla. Beat well. Then blend in dry ingredients and mix thoroughly. Shape dough into balls using a rounded teaspoonful for each. Roll in sugar and place on ungreased cookie sheet. Bake at 375 degree oven for 8 minutes. Remove from oven and place a solid milk chocolate candy kiss or star on top, pressing down so cookie cracks. Return to oven and bake 2-5 minutes longer or until golden brown.