Gram's Recipes - Rice in Oven

1 1/2 cups rice (Uncle Ben's converted)
1 chopped onion
3 cups water
1-2 beef cubes
celery
dash sugar, pepper & salt
green pepper
1 can mushrooms

Saute onion, celery, green pepper and mushrooms. Mix all together in baking dish. Bake at 350 for 1 hour.