1 c. (2 sticks) butter, softened
1/2 c. sugar
1/2 c. brown sugar
2 egg yolks or 1/3 c. egg beaters
1 tsp. vanilla
1 c. flour
1 1/4 c. quick cooking oats
1 c. walnuts, chopped
1 c. raisins
1 (12 oz.) pkg. semi-sweet chocolate morsels

Combine softened butter with sugar and brown sugar; beat until creamy; add egg and vanilla; beat well. Blend in flour, stir in oats, nuts and raisins. Spread in lightly greased 15 1/2 x 10 1/2 x 1" pan. Bake 20 minutes at 350 degrees. Sprinkle chocolate morsels over top; let stand 5 minutes. Spread chocolate evenly over cookie layer. Chill 10 minutes. Cut and serve.