Boil ducks until tender in covered pan. Save broth. Take meat from bones and chop. Mix well with all ingredients EXCEPT mushroom soup and cheese. Put in large buttered casserole and let stand overnight in refrigerator.
Pour mushroom soup over casserole and bake 1 - 1 1/2 hours at 400° F. Sprinkle grated cheese over top last few minutes of cooking.
Servings: 8