1. In a large mixer bowl, beat butter until softened. Add brown sugar and beat until fluffy. Add egg yolk and vanilla and beat well. Add flour and beat until well mixed. Cover and chill at least two hours or until easy to handle.
2. Shape into 1-inch balls. Place 2 inches apart on an ungreased cookie sheet. Flatten with the bottom of a glass dipped in sugar.
3. Bake in a 350 oven for 7 to 9 minutes or til done. Remove and cool.
4. Frost with Browned Butter Frosting and, if desired, sprinkle with chopped pecans, gently pressing nuts into frosting. Makes about 42
5. Browned Butter Frosting: In a saucepan, heat 1/4 cup butter over low heat until lightly browned. Remove from heat. Stir in 2 1/4 cups sifted confectioner's sugar, 1 tsp. vanilla and enough milk (2 to 3 T) to make frosting spreadable.


