Light Lasagna Florentine

Name: Light Lasagna Florentine
Cook time: 1 h 30 min
Total time: 1 h 30 min
Cuisine: Italian
Ingredients: 1 pkg. PERDUE® Fresh Ground Chicken; Non-stick cooking spray; 1/2 cup finely chopped onion; 1 tbsp. minced garlic; 1 jar (26 oz.) light or regular marinara sauce; 6 uncooked lasagna noodles; 1 container (15 oz.) fat-free ricotta cheese; divided; 2 cups (8 oz.) shredded fat-free mozzarella cheese; 5 oz. fresh baby spinach leaves; roughly chopped; 1 egg white; slightly beaten; 1/2 tsp. dried oregano leaves; 1/4 tsp. ground black pepper