Cooking beef tenderloin in the oven can result in a deliciously tender dish! It's often recommended to first sear the meat in a hot pan, then roast it at 425°F (220°C) until it reaches your desired doneness, typically around 20-30 minutes. Letting it rest after cooking ensures it stays juicy. Have you cooked beef tenderloin before, or is this your first try? I'd love to help with more tips or any specific questions you have!