1 c. butter
1/2 c. sugar
1 egg yolk
2 1/2 c. flour
2 med. or 1 1/2 lg. cans crushed medium pineapple, drained
2 sm. pkg. vanilla pudding, mixed as pkg. directs
Cool Whip

For crust, mix together butter, sugar, egg yolk and flour. Spread on 11 x 16 inch cookie sheet. Bake at 350 degrees for 15 to 20 minutes until golden brown. For filling, mix prepared pudding and pineapple and pour over baked crust. Top with Cool Whip.