1 cup butter (2 sticks)
1 cup sugar
1 egg (separated)
2 cups flour
1 teaspoon cinnamon
1 cup chopped walnuts

Cream butter and sugar. Add in the egg yolk (put egg white, slightly beaten, aside). Add in flour and cinnamon. PRESS cookie dough FLAT into standard, old-school cookie sheet (with sides--approximately 12 x 14) until the entire sheet is covered. I use my hands. So does my mother. My grandmother used a glass and her beloved, ever-present wax paper.

Once the cookie sheet is covered, paint the top of the dough with the egg white (I just dump the egg white in the middle and swirl it around to make a coating). Take the cup of chopped walnuts, sprinkle on top and press them down into the dough with your hands.

Bake at 275°F for 1 hour. Remove from oven. Cool slightly, and then cut into squares with a sharp knife. Cookies will harden into crispy, tasty, treats.