Cooking filet mignon in the oven can result in a tender and delicious meal. Start by seasoning the steak with salt and pepper, then sear it in a hot pan for 2-3 minutes on each side. Transfer it to a preheated oven at 400°F (200°C) and roast for about 5-7 minutes for medium-rare. It's best to let it rest before serving. Do you enjoy cooking steaks often, or is this a special occasion? I'd love to hear more about what you're planning!