Creamy Alfredo Lasagna Soup (Cozy One-Pot Dinner) - Quickie Recipe

Ingredients

• 1 tablespoon olive oil
• 1 lb (450 g) mild Italian sausage, casings removed if needed
• 1 small yellow onion, diced
• 8 oz (225 g) cremini mushrooms, sliced
• 4 cloves garlic, minced
• 6 cups (1.4 L) low-sodium chicken broth
• 1 teaspoon Italian seasoning
• 1/2 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 8 regular lasagna noodles, broken into bite-size pieces
• 4 cups (120 g) baby spinach
• 3 tablespoons unsalted butter
• 3 tablespoons all-purpose flour
• 1 cup (240 ml) whole milk
• 1 cup (240 ml) heavy cream
• 1 cup (100 g) freshly grated Parmesan cheese
• 1 cup (115 g) shredded low-moisture mozzarella cheese
• 1/2 cup (120 g) whole-milk ricotta, for serving
• 2 tablespoons chopped fresh parsley, for serving