Turkey or Chicken Casserole

This recipe had a big surprise hidden in it: cooked chopped chicken. If there is not enough turkey for supper, extend it by using this recipe. The flavor will still be there and your family will never suspect you tricked them.
1-1/2 cups chopped cooked turkey and/or chicken.
1 cup quick oats, uncooked
1 cup shredded cheddar cheese
1 medium onion, chopped
1-1/2 teaspoons salt
1/2 teaspoon black pepper
3 cups water
3/4 cup dry milk solids
2 eggs, beaten
Combine all ingredients. Spoon into buttered 9 by 13 inch baking dish. Bake at 400 F. for 30 minutes or until center is set. Serves 4.