How Long To Cook Filet Mignon In Oven At 425

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At 425°F, filet mignon sears quickly on the outside while staying tender inside if you watch the clock. Most people ask how long to cook filet mignon in oven at 425, and the honest answer depends on thickness and the doneness you want. This guide gives you exact times, temps, and a simple method that works every time.

Filet mignon is lean and mild, so it cooks fast and dries out easy. High heat like 425°F helps you get a nice crust without overcooking the center. The trick is to combine a short oven roast with a quick sear, or sear first then finish in the oven. Either way, timing is everything.

How Long To Cook Filet Mignon In Oven At 425

For a standard 1.5-inch thick filet, plan on 10 to 14 minutes total at 425°F. That range covers medium-rare to medium. If your steak is thinner (1 inch), cut that down to 7 to 9 minutes. If it’s thicker (2 inches), add 3 to 5 minutes.

Use a meat thermometer. It’s the only way to be sure. Pull the steak when it reads 5°F below your target temp because it keeps cooking as it rests.

Exact Cooking Times By Doneness

These times assume a 1.5-inch thick filet at room temperature, cooked at 425°F in a preheated cast iron skillet or oven-safe pan.

  • Rare (120-125°F final): 8 to 10 minutes
  • Medium-rare (130-135°F final): 10 to 12 minutes
  • Medium (140-145°F final): 12 to 14 minutes
  • Medium-well (150-155°F final): 14 to 16 minutes
  • Well-done (160°F+ final): 16 to 18 minutes (not recommended for filet)

Remember, these are total times including a quick sear on the stovetop. If you skip the sear and roast only, add 2 to 3 minutes.

Why 425°F Works So Well

425°F is hot enough to brown the outside fast but not so hot that the inside cooks before the crust forms. It’s a sweet spot for lean cuts like filet. Lower temps (350°F) take longer and can dry out the meat. Higher temps (500°F) risk burning the outside before the center is ready.

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Also, 425°F is easy to remember and works in most home ovens. Just make sure you preheat fully. A cold oven throws off your timing.

Step-By-Step Method For Perfect Filet At 425

Follow these steps and you’ll get a restaurant-quality steak at home. Don’t skip the resting step.

  1. Take the filet out of the fridge 30 to 40 minutes before cooking. Room temp meat cooks more evenly.
  2. Pat it dry with paper towels. Moisture steams the meat and stops browning.
  3. Season both sides with salt and pepper. Use more salt than you think you need.
  4. Preheat your oven to 425°F. Put a cast iron skillet inside while it heats.
  5. Once the oven is ready, carefully move the hot skillet to the stovetop over high heat.
  6. Add a tablespoon of oil with a high smoke point (avocado or grapeseed).
  7. Sear the filet for 1 to 2 minutes per side until a brown crust forms.
  8. Add a pat of butter and a sprig of thyme or rosemary if you like. Spoon the butter over the steak.
  9. Transfer the skillet to the oven. Roast for 4 to 8 minutes, depending on thickness and doneness.
  10. Check the internal temp with a thermometer at the 4-minute mark. Pull it 5°F before your target.
  11. Move the steak to a cutting board or plate. Tent loosely with foil.
  12. Rest for 5 to 10 minutes. This lets the juices redistribute.
  13. Slice against the grain and serve.

How To Check Doneness Without A Thermometer

If you don’t have a thermometer, use the finger test. Touch the center of the steak and compare it to the base of your thumb.

  • Rare: soft, like the fleshy part of your palm below the thumb
  • Medium-rare: slightly firm, like the pad below your thumb when you touch thumb to index finger
  • Medium: firmer, like thumb to middle finger
  • Medium-well: quite firm, like thumb to ring finger
  • Well-done: very firm, like thumb to pinky
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This method isn’t perfect. A thermometer is way more reliable. But it works in a pinch.

Common Mistakes To Avoid At 425°F

Even good cooks mess up filet sometimes. Here are the big ones.

Overcrowding The Pan

If you cook two or more filets, use a pan big enough to leave space between them. Crowding steams the meat instead of searing it. Work in batches if you have to.

Not Preheating The Pan

A cold pan means no crust. The steak will stick and cook unevenly. Let that skillet get properly hot before the meat touches it.

Skipping The Rest

Cut into a filet right out of the oven and juice runs everywhere. Rest it. Five minutes minimum. Ten is better for thicker cuts.

Using The Wrong Oil

Butter burns at high heat. Olive oil smokes. Use avocado, grapeseed, or canola oil for the sear. Add butter at the end for flavor, not for cooking.

Going By Time Alone

Ovens vary. Steak thickness varies. Your fridge temp varies. Time is a guide, not a rule. Always check temp.

What About Thicker Or Thinner Filets

Filet mignon comes in different sizes. A 1-inch steak cooks much faster than a 2-inch one. Here’s how to adjust.

  • 1-inch thick: sear 1 minute per side, roast 3 to 5 minutes
  • 1.5-inch thick: sear 1.5 minutes per side, roast 5 to 7 minutes
  • 2-inch thick: sear 2 minutes per side, roast 7 to 10 minutes
  • 2.5-inch thick: sear 2 minutes per side, roast 10 to 12 minutes

For very thick cuts, you might want to lower the oven to 400°F after searing to avoid a burnt outside and raw center. But 425°F works fine if you watch it close.

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Should You Tie The Filet

Some butchers tie filet with twine to keep its shape. If yours is tied, leave the twine on during cooking. Cut it off before slicing. It helps the steak cook evenly.

Resting And Serving Tips

Resting is not optional. It’s part of the cooking process. During rest, the internal temp rises another 5°F and the juices settle. A rested steak is juicier and more tender.

Serve filet with simple sides. Mashed potatoes, roasted asparagus, or a light salad work great. Don’t drown it in sauce. The meat should be the star.

If you have leftovers, store them in the fridge for up to 3 days. Reheat gently in a low oven (300°F) for 5 to 7 minutes. Microwaving will ruin the texture.

Final Timing Cheat Sheet

Here’s the short version you can screenshot or write down.

  • Preheat oven to 425°F with cast iron skillet inside
  • Sear 1 to 2 minutes per side on stovetop
  • Roast 4 to 8 minutes for medium-rare (1.5-inch thick)
  • Pull at 125-130°F for medium-rare
  • Rest 5 to 10 minutes
  • Total time from start to plate: about 20 to 25 minutes

That’s it. With a hot oven, a good thermometer, and a little attention, you can cook filet mignon at 425°F like a pro. The key is to not walk away. Stay close, check the temp, and pull it on time. Your steak will be tender, juicy, and cooked just the way you like it.