How to Cook Filet Mignon in Cast Iron

Filet mignon is prized for tenderness and a mild, refined beef flavor. A hot cast-iron pan builds the crust the cut needs, while an oven finish gives you more control over the center.

Ingredients

• 2 center-cut filet mignon steaks
• Kosher salt
• Freshly cracked black pepper
• 1 tablespoon high-heat cooking oil
• 1 tablespoon unsalted butter, optional
• 2 garlic cloves and 2 thyme sprigs, optional

Before you begin

Thaw the steaks safely in the refrigerator. Pat every surface dry, including the sides. Season with salt and pepper. If you salt in advance, keep the steaks refrigerated; do not leave raw meat sitting at room temperature for extended periods.

Step-by-step method

1. Preheat the oven to 400°F. Place a rack in the center.
2. Heat the skillet. Preheat a cast-iron skillet over medium-high heat until properly hot. Add the oil and swirl to coat.
3. Sear the first side. Place the filets in the pan with space between them. Cook undisturbed until a browned crust develops.
4. Turn and sear. Flip the steaks. Briefly sear the second side and, using tongs, brown the edges where practical.
5. Add aromatics if using. Reduce the heat slightly, add butter, garlic and thyme, and spoon the foaming butter over the steaks for a short baste.
6. Finish in the oven. Transfer the skillet to the oven. Begin checking early with an instant-read thermometer; thickness and starting temperature change the timing.
7. Rest before serving. Move the filets to a clean plate. For food safety, USDA recommends whole beef steaks reach 145°F and rest at least three minutes.

How to get a better crust

• Dry the surface thoroughly. Moisture turns to steam before browning can begin.
• Preheat the skillet. Filet is lean, so it benefits from decisive initial heat.
• Do not crowd the pan. Leave enough room for moisture to escape.
• Use a thin layer of oil. A neutral high-heat oil helps transfer heat evenly.

Frequently asked questions

Can I cook filet entirely on the stovetop?

Yes, especially for thinner filets. For thicker steaks, an oven finish generally offers more even heat and requires less aggressive pan management.

Should I wrap filet in bacon?

You can, but it changes the cooking process and the final flavor. A well-seared filet does not require bacon; use it because you enjoy it, not because the cut needs to be rescued.

What should I serve with filet mignon?

Classic pairings include roasted potatoes, creamed spinach, mushrooms, asparagus or a simple pan sauce. Keep the sides focused so the steak remains the centerpiece.