1 cup butter
1 cup brown sugar
1 egg yolk
1/2 teaspoon vanilla extract
2 cups flour
1 teaspoon ground cinnamon
1 egg white
3/4 cup chopped walnuts
Cream butter and brown sugar; beat in egg yolk and vanilla. Stir together flour and cinnamon, and add to creamed mixture. Pat into an ungreased 10×15-inch baking pan. Brush with egg white. Sprinkle with nuts and press them lightly into the top. Bake at 350 degrees F for 18 to 20 minutes. Cut into diamonds while still warm.