– 2 tablespoons unsalted butter – 2 Garlic cloves minced – 1 cup onion chopped – 10 ounces fresh baby spinach – 4 cups Heavy cream – 1 1/2 cups grated Parmesan – 15 ounces Ricotta cheese – 1/4 teaspoons black pepper – 1 1/2 teaspoons salt Chicken and cheese filling – 3 cups shredded rotisserie chicken – 15 Cooked lasagna noodles – 3 cups shredded Mozzarella cheese