Roast Cornish Hen

1 Cornish hen (about 1 pound), thawed
3 slices onion
1 small carrot, sliced
1/2 stalk celery, sliced
Salt and pepper to taste
2 tablespoons water

Place vegetables in bottom of crockette. Place Cornish hen on top. Season with salt and pepper. Pour water over all. Cover and cook for 8 to 10 hours.