THAWED AND DRAINED SAUCE, YOUR FAVORITE COVER BOTTOM OF LASAGNE PAN WITH one third OF THE SAUCE. ARRANGE LAYER OF UNCOOKED NOODLES (5-6 PCS) ON BOTTOM. COVER WITH SECOND one third OF THE SAUCE. COMBINE RICOTTA, PARMESAN, AND SPINACH AND SPOON half OF THE MIXTURE OVER THE NOODLES. PUT A SECOND LAYER OF NOODLES OVER THE CHEESE MIXTURE, THEN THE REST OF THE CHEESE MIXTURE. COVER WITH REMAINING SAUCE. TOP WITH THE MOZARELLA AND JACK. ~ COVER WITH FOIL, DOMED SO THAT CHEESE DOESN'T STICK TO THE TOP. BAKE 45 MINUTES @ 375. REMOVE FOIL AND BAKE 20 MINUTES MORE. ~ ALLOW TO SET FOR half HOUR BEFORE CUTTING TO SERVE.