I make mine with lots of fresh vege as the 'filler'. Basically whatever I have lying around. Last night I used an onion, a carrot, some red capsicum, 4 mushrooms and diced them all up in the food processor. Then I mixed this all with about 500g of ground beef, some chopped garlic, a slosh of chili sauce, an egg and some Italian seasoning. Formed into small meatballs and put into a roasting dish in the oven for half an hour. Then I poured over a tomato sauce - saute onion and garlic in some olive oil then add 2x tins of chopped tomatoes and a slosh of balsamic vinegar, season with salt and pepper - and leave in hot oven for another 15 mins while I cooked pasta for the husband and peas for myself. My portion of meatballs was served on a bed of baby peas and sprinkled with parmesan cheese.