Meatballs With Creamy Gravy - With greens

1 lb meatball, shaped and cooked 4 cups sliced fresh mushrooms 3 large garlic cloves , minced 3 tablespoons butter (can use more or less) 2 tablespoons[...]

1 lb lean ground veal or 1 lb chicken 2 slices white bread 1/2 cup milk 1 egg 1 large shallot , finely minced (you could sub a small onion) 2 garlic cloves ,[...]