Heat Dutch oven over medium-high heat. Add ground beef, break up with wooden spoon, & cook 6-7 minutes until browned. Drain fat & set aside.
Add diced onion to pot & cook 3-4 minutes until soft. Add garlic & sauté 30 seconds.
Pour in crushed tomatoes, tomato sauce, & beef broth. Stir in Italian seasoning, salt, pepper, & red pepper flakes. Bring to a boil.
Add broken lasagna noodles. Reduce heat to medium & simmer 12-15 minutes until pasta is tender, stirring occasionally.
Lower heat to low. Stir in cottage cheese gently & simmer 2-3 minutes.
Ladle into bowls. Top each with mozzarella, Parmesan & fresh basil. Serve hot.