IN A BLENDER OR FOOD PROCESSOR, PROCESS THE COTTAGE CHEESE, CREAM CHEESE, YOLKS, SUGAR AND VANILLA UNTIL WELL BLENDED.
BATTER:
GRADUALLY ADD SOUR CREAM, ORANGE JUICE, EGGS, BUTTER, FLOUR, SUGAR, BAKING POWDER AND CINNAMON IN A BLENDER AND PROCESS UNTIL COMPLETELY BLENDED.
POUR HALF OF THE BATTER INTO A GREASED 9 X 13" BAKING DISH. GENTLY SPREAD THE FILLING OVER THE BATTER, IT WILL MIX A LITTLE. POUR THE REST OF THE BATTER OVER THE FILLING. COVER AND REFRIGERATE OVERNIGHT.
IN THE MORNING BAKE IN A PREHEATED 350° OVEN, UNCOVERED FOR 50 TO 60 MINUTES. REMOVE FROM OVEN AND PLACE ON A WIRE RACK TO COOL ( CASSEROLE WILL BE SLIGHTLY PUFFED AND GOLDEN IN COLOR). CUT INTO SQUARES, TOP EACH PORTION WITH A DALLOP OF SOUR CREAM AND PRESERVES AND SERVE IMMEDIATELY. SERVES 8