Heat oven to 350 degrees. Mix brown sugar, butter, shortening, egg yolk and ... sheet; cool. Fill thumbprints with jelly. About 3 dozen. If using self-rising flour, omit salt.
Heat oven to 350 degrees. Mix brown sugar, shortening, butter, egg yolk and vanilla. ... sheet; cool. Fill thumbprint with jelly. Yield: about 3 dozen cookies.