Heat olive oil in a large pot over medium heat.
Add diced onion and sauté until translucent, about 5 minutes.
Stir in minced garlic and sauté for an additional minute until fragrant.
Pour in the broth and bring to a simmer.
Stir in the heavy cream, combining well.
Add broken lasagna noodles and cook until tender, about 10 minutes.
Stir in ricotta cheese until melted and creamy.
Mix in mozzarella and Parmesan cheese until melted.
Season with Italian seasoning, salt, and pepper to taste.
Serve hot, garnished with fresh basil.