Add Italian sausage and ground beef to the Dutch oven, mix and chop while cooking until browned.
Drain the fat from the cooked meat and set aside.
In the same pot, add olive oil, and sauté the onions for 5 minutes, then add garlic and cook slightly.
Stir in tomato paste and caramelize to enhance flavors.
Return the drained meat to the pot, mix well with the tomato paste.
Stir in spicy marinara sauce and chicken broth, adding seasonings.
Add Italian seasoning, red pepper flakes and salt; stir well.
Break lasagna noodles into 1-2 inch pieces and add to the pot.
Reduce heat to a simmer and cook noodles for about 12 minutes until al dente.
Serve hot with dollops of ricotta cheese on top.