1/4 c. butter, softened
1/4 c. shortening
1/4 c. brown sugar, packed
1 egg, separated
1/2 tsp. vanilla
1 c. all purpose flour
1/4 tsp. salt
3/4 c. finely chopped nuts
Jelly or tinted confectioners sugar
Icing

Heat oven to 350 degrees. Mix thoroughly butter, shortening, sugar, egg yolk, and vanilla. Work in flour and salt until dough holds together. Shape dough by teaspoonfuls into 1 inch balls.

Beat egg whites slightly. Dip each ball into egg white; roll in nuts. Place 1 inch apart on ungreased baking sheet; press thumb deeply into center of each. Bake about 10 minutes or until light brown. Immediately remove from baking sheet; cool. Fill thumbprints with jelly. Makes about 3 dozen cookies.