1 lb. spaghetti, cooked in unsalted water
1 med. onion
1/2 bottle Italian salad dressing
1 pkg. pepperoni, diced
1 med. green pepper, diced
1 med. tomato, chopped
3 to 4 stalk celery, thinly sliced

Mix spaghetti, green pepper, onion, tomato, dressing, pepperoni and celery. Let set overnight or at least several hours before serving. Mix well again before serving.