Form into very small balls (I get approximately 90 meatballs from 1 pound ground beef. I bake mine on a nonstick cookie sheet and turn them half-way through the cooking time).
Bake about 10-15 minutes, until the meatballs have browned but are still soft (watch closely).
Remove from oven and drain on paper towel, if necessary.
Soup: Place all of the ingredients, except the pasta and escarole or spinach, into the crock pot with meatballs.
Cook on low for 8 hours (Add pasta and escarole or spinach during the last hour of cooking and salt to taste, if necessary).
Remove bay leaves.
Top each serving with grated parmesan or romano cheese.
Note: The meatballs must be prepared before being put into the crock pot (make them the night before and put them in the refrigerator, or even keep a batch in the freezer. I basically prepare as much as I can in advance so all I have to do is just put it all in the crock pot in the morning).