Creating Crockpot White Lasagna Soup is straightforward when you follow these simple steps:

1. Brown the Sausage: In a skillet over medium heat, brown the ground Italian sausage until fully cooked. Drain excess fat and set aside.
2. Sauté Vegetables: In the same skillet, sauté the chopped onion and minced garlic until soft and fragrant, about 3-4 minutes.
3. Combine Ingredients: In your crockpot, combine the cooked sausage, sautéed onion and garlic, chicken broth, ricotta cheese, Italian seasoning, salt, and pepper.
4. Add Noodles: Gently stir in the uncooked lasagna noodles, ensuring they are submerged in the broth.
5. Cook: Cover and cook on low for 6-8 hours or on high for 3-4 hours, until the noodles are tender.
6. Add Spinach and Cheese: About 30 minutes before serving, stir in the chopped spinach and both mozzarella and Parmesan cheeses, mixing well.
7. Serve: Once everything is heated through and the cheese is melted, taste and adjust seasonings if necessary.

These steps will guide you in creating this incredible soup effortlessly.