Opera Squares
["1/2 c. butter", "2 Tbsp. sugar", "1 c. flour", "2 eggs", "1 1/2 c. brown sugar", "2 Tbsp. flour", "1 c. black walnuts, chopped", "1/4 c. coconut", "1/2 tsp. vanilla"]
["Mix butter, sugar and flour thoroughly with a pastry blender. Pat lightly into a greased 7 x 11-inch oblong pan.", "Bake 15 minutes at 350\u00b0.", "Cover with the balance of the ingredients mixed as follows:", "Beat eggs until light; add brown sugar and flour and mix until smooth.", "Add walnuts, coconut and vanilla and bake 30 minutes at 300\u00b0.", "Let cool a little and cut into squares."]
["butter", "sugar", "flour", "eggs", "brown sugar", "flour", "black walnuts", "coconut", "vanilla"]