Cook lasagna noodles as per directions. Combine ricotta cheese, spinach, 1/2 C. mozzarella cheese and eggs. Mix well. Lightly grease a 9x13-inch baking dish with cooking spray. Spread two C. spaghetti sauce in dish. Top with half each: cooked pasta (overlapping in dish), ricotta cheese, spaghetti sauce and parmesan cheese. Repeat layering. Cover and bake 45 to 50 minutes or until hot and bubbly. Uncover, top with 1 C. mozzarella cheese. Bake 5 minutes longer, let stand 15 minutes. Top with parsley.