1/2 c. butter
1/2 c. sifted frosting sugar
1/4 c. sifted cornstarch
1 3/4 c. sifted all purpose flour
1 egg yolk

Blend butter and sugar together. Add and blend in cornstarch. Add flour and blend a little at a time; add egg yolk and blend in. Press through cookie gun, using stars and wreaths - green or red cherry pieces if desired. Bake at 325 degrees for 20 minutes.