* Rhubarb Sauce for R$ Heat oven to 325'F. Lightly grease a 23 cm springform pan. In a large bowl; with elec mixer, beat the softened cream cheese and sugar until fluffy. Beat in eggs, one at a time, beating after each addition. Fold in flour and lemon rind until well combined.. Stir in half cup of the rhubarb sauce. Turn into greased pan Bake cake until center is just set-about 1 hour. Turn off oven and allow cake to stay in oven 1 hour longer Refrigerate cake until ready to serve-4 hours to over night. Loosen edges and remove sides of pan.Place cake on serving plate and top with remaining rhubarb sauce.