Start by chopping your onions, garlic, and basil. Break the lasagna noodles into bite-sized pieces. Having everything prepped makes cooking smooth and stress-free.
In a large pot, brown the ground beef over medium heat. Add onions, garlic, Italian seasoning, and red pepper flakes, cooking until fragrant. This step builds a flavorful base for your soup.
Pour in crushed tomatoes and broth. Stir to combine and bring to a gentle simmer. The simmering helps meld all the flavors together beautifully.
Add the broken lasagna noodles to the simmering soup. Cook until tender but not mushy, usually about 10 minutes. Stir occasionally to prevent sticking.
Reduce heat and stir in heavy cream. Add ricotta, mozzarella, and Parmesan cheese, mixing gently until melted and creamy. This creates the signature lasagna flavor in soup form.
Taste and adjust with salt and pepper. Serve with fresh chopped basil on top for a fresh, aromatic finish.