Line bottom of 8 inch square pan with graham wafers. Beat 1/2 cup butter or margarine, 1/2 cup icing sugar and 1 egg yolk until fluffy. Mix together maraschino cherries, walnuts, banana, lemon juice and coconut. Spread over wafers. Cover with another layer of graham wafers and press down.
Cream together 2 tablespoons. butter, 1 cup confectioners' sugar, 1/4 cup almond extract and enough maraschino cherry juice to make spreading easy. Spread over wafers and chill 24 hours. Slice and serve.