Cream sugar, butter, egg and vanilla. Add peanut butter and milk, mix well. Add in dry ingredients. Spoon out by spoonfuls onto ungreased cookie sheet. Bake at 190ºC or 10-12 minutes.
Unwrap chocolate kisses. Remove from oven and top each cookie with a kiss while still hot.
Note: If you like crunchy cookies replace butter with shortening, but other wise the butter makes them nice and chewy.