Georgia's Meatballs

1 1/2 pounds ground beef
1/2 cup Minute Rice
1/2 package of dry onion soup
1/2 cup milk
1/2 chopped onion
1 can tomato soup
1 small can of sliced mushrooms (optional)

Mix the six ingredients together. Roll into balls (size doesn't matter). Place in shallow pan. Pour one can of tomato soup over the top. Bake at 325 degrees for 1 hour. You can add on small can of mushrooms to either the meat mixture or sprinkle over top.