Pineapple Filling
["3 egg yolks", "1 c. sugar", "2 Tbsp. flour", "1 1/2 Tbsp. lemon flavoring", "1 large can crushed pineapple", "1 Tbsp. butter"]
["Mix sugar, flour and all other ingredients together.", "Cook over slow heat.", "Stir constantly until thick.", "Cool and spread on cake layers."]
["egg yolks", "sugar", "flour", "lemon flavoring", "pineapple", "butter"]