Preheat oven to 350.
In a medium bowl, combine bread crumbs, milk, and egg substitute.
Add beef, chicken, green onions, celery, oregano, sage, salt, and pepper. Mix well.
In a shallow baking sheet, pat meat mixture into a 7x3x2 inch loaf.
Arrange vegetables around loaf. Spray vegetables with vegetable oil spray and season, if desired.
Bake, uncovered, for 50 minutes, stirring vegetables once.
When meat is almost done and vegetables are almost tender, put sauce on top of meat and bake for 10 minutes more.