Add the thyme, salt, bullion/water, and wine. Cook on medium heat for about 20 minutes.
In a large bowl, mix together the milk soaked, bread, panko, parsley, salt/pepper, and egg in a bowl until well combined.
Add the meat and mix thoroughly with your hands. Roll into small meatballs and add to the pan with the onions, brown on each side, reduce heat if they're cooking too fast and add additional oil if necessary.
Preheat oven to 370 degrees.
Prepare the sauce by combining all of the ingredients and heating in a saucepan for 10 minutes. (I let the meatballs soak in this sauce overnight before cooking them in the oven, this can enrich the flavor)
Place the meatballs, onion mixture, and sauce in a baking dish or cast iron skillet. Top with provolone or mozzarella cheese and cook for 20 minutes, (check on it after 15.) Once cheese is hot and bubbly, remove, and top with thyme or parsley.