First take wrappers off kisses and place kisses in a plastic bowl. Mix thoroughly shortening, peanut butter, sugars and egg. Blend in flour, soda, baking powder and salt. Cover and chill. Heat oven to 375°. Shape dough into 1-inch balls. Place 3 inches apart on lightly greased baking sheets. With fork dipped in flour, flatten in crisscross pattern to 2 inches. Place kiss on the cookies after baking. Bake 10 to 12 minutes, or until set but not hard. Makes about 3 dozen.