Mix all the meatball ingredients and form balls. Roll them in additional flour, if you wish, but not necessary. Gently fry in cooking oil (optional). Set aside.
for the vegetable casserole:
Sautee garlic and onion for a few minutes or until the onions are transparent.
Add carrots and zucchini and cook for two minutes over medium-high heat.
Add tomatoes, bell peppers and cook for about 3 minutes and then turn once.
Slowly add the meatballs and parsley, then cook for 2 more minutes.