In a large pot, heat some oil over medium heat and add the ground beef or sausage. Brown the meat for about 5 minutes.

Add the diced onion and cook until soft, about 5 minutes.

Stir in the minced garlic and cook for 1 minute, just until fragrant.

Add the crushed tomatoes to the pot, stirring to combine.

Pour in the beef broth and add the Italian seasoning, salt, and pepper.

Increase the heat and bring the mixture to a boil, then reduce to a simmer for 5 minutes.

Add the broken lasagna noodles and cook until tender, about 10 minutes.

Remove from heat and stir in ricotta, mozzarella, and Parmesan cheeses until melted.