1/2 c. butter
1/3 c. brown sugar
1 c. flour
1/2 c. chopped walnuts

Cream butter and sugar. Add nuts and flour. Makes a crumb mixture. Save 1 cup. Grease 8-inch square pan. Bake at 350 degrees for 15 minutes.

TOPPING:

1/2 c. white sugar
1 (8 oz.) cream cheese, softened
1 egg
2 tbsp. milk
1 tbsp. lemon juice
1/2 tsp. vanilla

Blend sugar and cream cheese. Add egg, milk, lemon juice, and vanilla. Spread on while hot. Sprinkle with reserved cup of crumb mixture. Bake at 350 degrees for 20 minutes. Chill.