Slow Cooker Fresh Veggie Lasagna

• Nonstick cooking spray
• 1½ cup Mozzarella cheese, shredded
• ½ cup part-skim Ricotta cheese
• ⅓ cup Parmesan cheese, grated
• 1 egg, lightly beaten
• 1 teaspoon dried oregano
• ¼ teaspoon garlic powder
• 1 cup low-sodium, fat-free marinara sauce (plus additional for serving)
• 1 medium zucchini, diced
• 4 no-boil lasagna noodles
• 1 bag baby spinach
• 1 cup thinly sliced mushrooms
• Fresh basil leaves (optional)

Spray crockery pot of slow cooker with nonstick cooking spray; set aside. In a small bowl, mix together Mozzarella, Ricotta, Parmesan, egg, oregano and garlic powder. Spread 2 tablespoons of pasta sauce in bottom of pot. Sprinkle 1/2 of zucchini over sauce and top with 1/3 of the cheese mixture. Break 2 noodles into pieces to cover cheese. Spread 2 tablespoons of sauce and then layer 1/2 of the spinach and 1/2 of the mushrooms. Repeat layering, ending with cheese and the remaining sauce. Firmly press ingredients into pot. Cover and cook over low heat for 4-5 hours. Allow lasagna to rest 20 minutes before cutting into wedges to serve. Spoon a little extra sauce over each serving and top with a basil leaf, if desired.   Source: National Dairy Council