First, I brown the ground beef or sausage in a skillet over medium heat. I then add diced onions and garlic, cooking until soft and fragrant. This step builds a flavorful base for the soup.
Next, I transfer the cooked meat and veggies into the crockpot. I add crushed tomatoes, tomato paste, broth, and seasonings, stirring to combine. Breaking the lasagna noodles into pieces and adding them now ensures they cook evenly.
I cover the crockpot and let it cook on low for 4-5 hours. The noodles absorb the flavors beautifully, creating a rich, hearty soup. Occasionally, I give it a gentle stir to prevent sticking.
Finally, I stir in ricotta, mozzarella, and Parmesan cheese, letting them melt slightly before serving. Topping with fresh parsley or basil adds color and freshness.