Killer Chicken Lasagna | Cooking Professionally

Ingredients

• 1 tablespoon olive oil
• 1 medium onion, finely chopped
• 4 tablespoons unsalted butter
• 1/3 cup all-purpose flour
• 2 1/2 cups chicken broth
• 1 1/2 cups half-and-half
• 2 teaspoons sea salt
• 1/2 teaspoon black pepper
• 3 cloves garlic, minced
• 5 ounces fresh spinach, coarsely chopped
• 1 (15-ounce) container ricotta cheese
• 1 large egg
• 3 cups mozzarella cheese, divided
• 1/4 cup parmesan cheese
• 1/4 cup parsley, chopped
• 9 lasagna noodles, cooked to al dente, according to the package directions
• 4 cups rotisserie chicken, shredded