Preheat oven to 350 F.
Place all vegetables except mushrooms in an oven-proof baking dish with a lid.
In a separate bowl, combine soup with water and Allegro, stirring until well-blended. Pour mixture over vegetables.
Put lid on baking dish, and bake for 1 hour.
After vegetables have baked for 1 hour, add mushrooms and cooked rabbit and squirrel meat. Cover dish with lid, and cook for another 30 minutes.
