Butterscotch cream cheese bars

Melt morsels and butter in medium heavy duty sauce pan over lowest possible heat, stirring constantly unit smooth. Stir in the crumbs and walnuts.reserve 2 cups of the crumb mixture for topping.; press remaining mixture into I greased 15x10 inch jelly roll pan. Bake in preheated 350* oven for 12 minutes. Beat cream cheese and sugar in large mixer bowl until creamy,add eggs, one at a time,beating well after each addition . Gradually beat in flour and lemon juice. Pour over crust,sprinkle with reserved crumb mixture. Bake at 350 for 20-25 minutes. Or until set . Cool completely in pan on wire rack. Cut into bars refrigerate . Makes 4 dozen bars