1 egg
1/2 c. sugar
1/2 tsp. salt
3/4 c. flour
1 tsp. vanilla
1/2 c. butter

Mix butter and sugar until smooth. Stir in eggs, salt and vanilla. Fold in flour and make smooth again. Drop by 1/2 to 1 teaspoon on greased cookie sheet. Bake in 375 degree oven for 3 to 5 minutes or until edges brown.