Brown Meat In Large Skillet; Drain. Stir In Spaghetti Sauce And Water. Mix Ricotta, 1-1/2 Cups Mozzarella, 2 Tbsp. Parmesan, Egg And Parsley. Spoon 1 Cup Meat Sauce Into Slow Cooker; Top With Layers Of Half Each Of The Noodles (Broken To Fit) And Cheese Mixture. Cover With 2 Cups Meat Sauce. Top With Remaining Noodles (Broken To Fit), Cheese Mixture And Meat Sauce. Cover With Lid. Cook On Low 4 To 6 Hours Or Until Liquid Is Absorbed. Sprinkle With Remaining Cheeses; Let Stand, Covered, 10 Min. Or Until Melted.