Stuffed Beef Tenderloin
["1 beef tenderloin (approximately 3 lb.)", "1/2 small onion", "1 1/2 c. soft bread crumbs", "4 slices bacon", "1 c. mushrooms (4 oz.)", "1/2 c. diced celery", "salt and pepper"]
["Heat oven to 350\u00b0.", "Have tenderloin split and flattened at the market.", "Lightly brown mushrooms in butter.", "Add bread crumbs, celery and enough hot water to moisten.", "Season and spread over meat.", "Bring second half over; fasten edges together; season. Place bacon strips over top.", "Roast uncovered in moderate oven at 350\u00b0 for 1 hour.", "Makes 6 to 8 servings."]
["beef tenderloin", "onion", "bread crumbs", "bacon", "mushrooms", "celery", "salt"]