Marinated Beef Tenderloin
["1 beef tenderloin", "1/2 tsp. Worcestershire sauce", "2 tsp. prepared mustard", "2 pkg. dry Italian seasoning dressing mix", "1 1/2 c. water", "1 c. ketchup"]
["Mix Worcestershire, mustard, Italian dressing mixes, water and ketchup; pour over tenderloin and marinate about 8 hours.", "Bake on roasting pan in 425\u00b0 oven for approximately 35 minutes, basting occasionally or until thermometer reaches 150\u00b0.", "Wrap in aluminum foil, shinny side in, until ready to slice and serve."]
["beef tenderloin", "Worcestershire sauce", "mustard", "water", "ketchup"]