Brown ground beef with onion and garlic.
Put in crock-pot and add sauce, tomatoes and seasonings.
Cook for 6-7 hours on low.
Add the last 4 ingredients during the last 30 minutes of cooking and turn crock-pot to high.
I added the fresh spinach, pasta, parmesan and 1 cup of the mozzarella and I mixed it all up really well.
Then I added the last 1/2 cup of mozzarella to melt on the top.