Brown sausage in large pot over medium heat.
Add diced onion to cooked sausage.
Cook onion until soft and translucent.
Stir in minced garlic for one minute.
Pour chicken broth into the pot slowly.
Add diced tomatoes with their juices.
Bring mixture to a rolling boil.
Add broken lasagna noodles to soup.
Cook noodles for recommended package time.
Reduce heat to low temperature setting.
Stir in heavy cream very slowly.
Add ricotta cheese and mix well.
Fold in mozzarella and Parmesan cheeses.
Season with Italian seasoning and salt.
Simmer until cheese melts completely smooth.