Roll out dough on floured board and transfer to a 16×10 inch baking pan.

Beat egg whites until stiff, gradually adding sugar.

Beat yolks, lemon and oil.

Fold beaten whites into yolk mixture and gently add nuts and bread crumbs.

Pour batter over dough. Bake at 350 degrees Fahrenheit for 45 minutes.

Cream egg yolks, confectioners sugar and margarine. Add remaining ingredients and beat. Spread onto cake.

Cut into squares. Garnish with walnut halves in center of each square.