How to cook beef tenderloin steaks in cast iron skillet

How to cook beef tenderloin steaks in cast iron skillet

Serves: 2

Hands On Time: 20 minutes

Total Time: 1 hour and 30 minutes

Ingredients

2 (8-ounce) filet mignon steaks

Kosher salt and freshly ground black pepper

2 tablespoons vegetable oil

5 cloves garlic

4 sprigs fresh thyme

4 tablespoons unsalted butter

Instructions

Pull the steaks out of the refrigerator 1 hour prior to cooking. Meanwhile, heat the oven to 400 degrees. About 5 minutes before you’re ready too cook, heat a cast iron skillet over medium-high heat.

Season the steaks on all sides with salt and pepper. When the skillet is lightly smoking, add the oil and steaks to the pan, making sure there is space between each steak. Sear on one side until a browned crust forms, about 5 minutes. Flip the steaks and cook for 2 minutes.

Add the garlic, thyme and 2 tablespoons of the butter. Swirl the butter in the pan, then transfer to the oven. Cook until an instant-read thermometer reads 120 degrees, 5 to 7 minutes. Remove the skillet from the oven and return to a burner over medium heat. Add the remaining butter, let it melt, and then use the butter to baste steaks constantly until the thermometer reads 125 degrees (for medium-rare).

Transfer the steaks to a plate and let rest for 5 minutes before slicing. Serve.

About the recipe

Cooking a steak in a cast iron pan not only imparts a delicious brown crust on the exterior of the meat, it also gives you the ability to continually baste the steak with butter for extra flavor and richness. Lean cuts like a filet mignon are perfect candidates for this technique. (But let’s face it: Virtually any steak is better when cooked in cast iron.)

Pro tip: Tying a piece of kitchen twine around the equator of the steak helps maintain its shape and allows for more even cooking. Pull the steak from the refrigerator at least an hour before cooking to help it cook evenly.

This is the perfect way to cook Filet Mignon at home – simple, flavorful and absolutely juicy. Great for Valentine’s Day or any time you want to make a special dinner!

How to cook beef tenderloin steaks in cast iron skillet

To be honest, this is the first year of my life I’m remotely interested in Valentine’s Day – maybe because I’ve finally realized what an opportunity for a special dinner I’ve been missing!

I think Filet Mignon is the quintessential entrée for a romantic night at home (not just on Valentine’s Day – any date night in qualifies 😉). It’s a very special cut you wouldn’t buy for an everyday kind of meal, and it’s quick to prepare.

It’s definitely a dish to wow your loved one with and I’ll show you just how simple it is to cook it to perfection!

Ingredients you’ll need

Here is a visual overview of the ingredients in the recipe. Scroll down to the printable recipe card at the bottom of this post for quantities!

How to cook beef tenderloin steaks in cast iron skillet
Ingredients for Filet Mignon: Filet steaks, butter, oil, garlic, rosemary, salt and pepper.

Ingredient notes

  • Filet steaks: Filet steaks/filet mignons are a little different depending on the continent you’re on. In Europe, they are cut from one specific end of the beef tenderloin and weigh about 3-4 ounces each. In the US, they are often cut from the whole center tenderloin and are cut in much larger portions, around 6-8 ounces per steak. If you want to use a European cut in the US, look for “Petite Filet Mignon”. I used “regular American” steaks cut from the middle of a beef tenderloin, about 6 ounces each. No matter what you use, there is no difference in the cooking method, just in the cooking time. Petite filet mignons cook even quicker than larger ones, so you need to watch them carefully.
  • Garlic: I highly, highly recommend using fresh garlic cloves in this recipe. So delicious!
  • Oil: I use a neutral cooking oil for searing the steak. I highly recommend sticking to oil, then use butter only in the oven. Butter tends to burn quicker, while oil is better-suited for the very high temperature we’re using for the searing part.

How to cook Filet Mignon

1. Start by removing your Filet Mignons from the fridge about 30-60 minutes before cooking them. Just unwrap them, place them on a plate, salt/pepper them and let them sit on the counter. This is a major part in yielding tender, juicy steaks.

2. Once ready, heat the oven to 360°F and place a cast-iron skillet over high heat on your stove.

Let it heat up well, then add the oil and sear your filet steaks without moving them until a brown crust forms on the bottom and they easily release from the pan. Flip and sear/brown the other side in the same way.

(They take about 2-3 minutes per side for 6-8oz steaks; 1-2 minutes for 4oz petite steaks).

  • How to cook beef tenderloin steaks in cast iron skillet
    season
  • How to cook beef tenderloin steaks in cast iron skillet
    sear
  • How to cook beef tenderloin steaks in cast iron skillet
    add butter, garlic, rosemary
  • How to cook beef tenderloin steaks in cast iron skillet
    roast in oven

3. Immediately take the pan off the heat, then add the butter, garlic and rosemary to the pan. The butter will splatter and melt immediately. I like to baste the steaks with a few tablespoons of the butter before adding them to the oven.

4. Place the skillet in the hot oven for 2-8 minutes, depending on how done you like your beef and the exact size of your Filet Mignons. Mine took 3 minutes to cook to medium-rare.

As a rule of thumb, 5 minutes will yield fillet steaks cooked to about medium. 3-4 minutes will yield medium-rare fillet steaks. 2 minutes will yield rare fillet steaks. 6-7 minutes will yield medium-well and 8 minutes well-done fillet steaks. The exact timing depends on your exact Filet Mignon weight and thickness.

5. Once done, you’ll want to remove the skillet from the oven. Remove the Filet Mignons to a plate, tent with foil and allow to rest for 5-10 minutes before serving with the butter and garlic from the pan.

How to cook beef tenderloin steaks in cast iron skillet

Recipe tips

No reverse sear? No, sorry, not from me. I know many people swear by the reverse sear, but I’ve tried it so many times, and with so many steak cuts… And while it turns out OK, I much prefer the “classic” way.

If you want to try a reverse sear, I will not keep you from it! I can only speak from my personal experience. (And from my husband’s… He cooked in many high-end European restaurants listed in the Michelin guide, and he says not once did they reverse-sear a steak.)

I only reverse sear when I cook meats sous-vide, in which case it makes total sense to me. But for regular cooking, I sear and then finish in the oven. Works perfectly if you ask me, and I live by the mantra to never change a winning team.

Room temperature meat: Don’t forget to remove your Filet Mignons from the fridge 30-60 minutes before you want to cook them. This is crucial to yield a juicy fillet that’s not tough. Just unwrap, place them on a plate and season. Then just leave them on the counter for 30-60 minutes until you’re ready to start.

Searing time and temperature: Stick to a short but hot sear. You really just want a nice, caramelized crust on the outside without the heat going too far inside yet.

Do not move the meat around in the pan. Leave it in place for 2-3 minutes, then carefully check the bottom. If the meat doesn’t release at all from the pan yet, give it more time. If it doesn’t have a nice crust yet, give it more time, too.

Thermometer: I highly recommend working with a meat thermometer, preferably one where you can stick the probe into your meat and then connect to the thermometer through an oven-safe wire. You leave the thermometer in your fillet and close the oven door, then you can pull it at exactly the right time!

I recommend inserting the thermometer through the side, not the top. Makes for a cleaner presentation and it’s easier.

Oven temperature: It is not necessary to finish the steak at a high temperature in the oven. The skillet is blazing hot and still transfers a lot of heat to the meat anyways, and you just want the heat to go through the steak without the outside ending up too done.

Air fryer instructions: If you have an air fryer, you can finish the steak in the air fryer for absolutely perfect results. Pre-heat the air fryer for 5 minutes on its highest setting while you’re searing the meat. Air fry your Filet Mignons for 2-3 minutes at 360°F, then leave them in the air fryer basket with the air fryer switched off and the basket almost closed until they reach your desired internal temperature, about 1-3 more minutes.

For the pan sauce, just place the butter, garlic cloves and rosemary into the skillet with the juices from searing. Place on the stove over medium-high heat for 2-3 minutes and serve with your fillet steaks.

Resting: Do not skip the resting time, it’s crucial to retain the juices and ensure your meat is tender. I know it’s tempting to cut right into a sizzling hot Filet Mignon… but I promise the rest exists for a reason.

Slicing: Always slice against the grain, not with the grain. It’s easier, looks neater and according to my non-scientifically-proven opinion… also tastes better.

How to cook beef tenderloin steaks in cast iron skillet

Internal temperature for beef fillet

The doneness of your Filet Mignons is best checked for with a food thermometer (affiliate link)- it’s really difficult to gauge it correctly in any other way, especially if you’re not experienced with cooking delicate cuts of meat.

I definitely do not trust myself to cook meat correctly without a food thermometer, I use it for absolutely everything, including cake; it takes the guesswork out of cooking and baking! Get one! ASAP!

Here are the internal temperature recommendations for different levels of doneness:

  • Rare: 125°F (red with red juices)
  • Medium Rare: 130°F (deep pink with reddish juices)
  • Medium: 140°F (light pink with clearer juices)
  • Medium well: 150°F  (slightly pink center with clear juices)
  • Well done: 160°F (fully cooked through, no longer pink at all)

The USDA recommends an internal temperature of at least 145°F for beef, for safe consumption, followed by a 3 minute rest. See full chart. I always choose medium-rare to medium when I eat steak, my husband eats steak rare to medium-rare. I do cook it to 145°F for our children. But it’s your personal choice to do what’s right for you and your family.

That being said, the fillet steaks do cook quickly this way. The skillet is HOT and transfers a lot of heat. I choose a blazing hot sear and then a medium-high oven temperature (360°F) because the steak basically just needs the heat to go through it at this point. My Filet Mignons were quite thick, yet only took 3 minutes to get to medium-rare.

Trust me, get a food thermometer (affiliate link). Cook your proteins accurately. They taste a LOT better this way!

How to cook beef tenderloin steaks in cast iron skillet

Serving ideas

There is no pairing more classic than steak and potatoes – a match made in heaven! And I love potatoes in many different ways to go with a decadent Filet Mignon:

  • Roasted baby potatoes or roasted fingerling potatoes
  • Smashed potatoes
  • Air Fryer French Fries
  • Some people love mashed potatoes (or instant pot mashed potatoes) with their steak – not my favorite with regular steak, but definitely special with Filet Mignon!

As far as vegetables go, you can’t go wrong with mushrooms or with a green vegetable here:

  • Roasted asparagus (or air fryer asparagus) is very classy for a special dinner
  • Sautéed green beans (or air fryer green beans)
  • Roasted broccoli (or air fryer broccoli)
  • Roasted brussels sprouts
  • Garlic butter baked mushrooms
How to cook beef tenderloin steaks in cast iron skillet

More date night recipes

  • Garlic Butter Shrimp Pasta with Tomato Sauce

  • Creamy Salmon Pasta

  • Instant Pot Short Rib Ragù

  • The Best Baked Pork Tenderloin

PS If you try this recipe, please leave a review in the comment section and add a star rating in the recipe card – I appreciate your feedback! Follow along on Pinterest, Facebook or Instagram. Sign up for my email list, too!

This is the perfect way to cook filet mignon at home – simple, flavorful and absolutely juicy. Great for Valentine's Day, or any time you want to cook a special dinner!

made it? tap the stars to add your rating!

Recipe details

Prep 10 mins

Cook 10 mins

Resting 1 hr 10 mins

Total 1 hr 30 mins

Servings 2 servings

Difficulty Medium

  • 2 Filet Mignons see notes for size recommendations
  • salt & ground black pepper to taste (season generously!)
  • 1 tablespoon oil
  • 2 tablespoons unsalted butter
  • 5 cloves garlic peeled
  • 4 sprigs fresh rosemary

  • Prep: Remove fillet steaks from fridge 30-60 minutes before preparing. Unwrap, season and let sit on a plate on the counter. For best results, do not skip this step.

    2 Filet Mignons, salt & ground black pepper

  • Sear: Once ready to cook, heat oven to 360°F. Place a medium cast iron skillet over high heat for 3-5 minutes. Once hot, carefully add oil (watch out for splatters). Sear the Filet Mignon for 2-3 minutes per side (1-2 minutes for Petite Filet Mignons), until browned with a nice crust. Immediately remove skillet from heat.

    1 tablespoon oil

  • Finish: Carefully add butter, garlic and rosemary to skillet. Place skillet in oven and bake for 2-8 minutes, depending on preferred doneness (see notes for internal temperatures; remove skillet from oven once internal temperature is 5-10°F below desired temperature).

    As a rule of thumb, 5 minutes will yield fillet steaks cooked to about medium. 3-4 minutes will yield medium-rare fillet steaks. 2 minutes will yield rare fillet steaks. 6-7 minutes will yield medium-well and 8 minutes well-done fillet steaks. The exact timing depends on your exact Filet Mignon weight and thickness.

    2 tablespoons unsalted butter, 5 cloves garlic, 4 sprigs fresh rosemary

  • Rest: Remove steak from skillet and place on a plate. Tent with foil, then rest for 5-10 minutes (do not skip rest). Serve with garlic cloves and butter from skillet.

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Filet mignon size: Fillet steaks/filet mignons are a little different depending on the continent you’re on.

In Europe, they are cut from one specific end of the beef tenderloin and weigh about 3-4 ounces each. In the US, they are often cut from the whole center tenderloin and are cut in much larger portions, around 6-8 ounces per steak.

If you want to use a European cut in the US, look for “Petite Filet Mignon”.

I used “regular American” steaks cut from the middle of a beef tenderloin, about 6 ounces each.

No matter what you use, there is no difference in the cooking method, just in the cooking time. Petite filet mignons cook even quicker than larger ones, so you need to watch them carefully.

Thermometer: I highly recommend working with a meat thermometer, preferably one where you can stick the probe into your meat and then connect to the thermometer through an oven-safe wire. You leave the thermometer in your fillet and close the oven door, then you can pull it at exactly the right time!

I recommend inserting the thermometer through the side, not the top. Makes for a cleaner presentation and it’s easier.

Air fryer instructions: If you have an air fryer, you can finish the steak in the air fryer for absolutely perfect results. Pre-heat the air fryer for 5 minutes on its highest setting while you’re searing the meat. Air fry your Filet Mignons for 2-3 minutes at 360°F, then leave them in the air fryer basket with the air fryer switched off and the basket almost closed until they reach your desired internal temperature, about 1-3 more minutes.

For the pan sauce, just place the butter, garlic cloves and rosemary into the skillet with the juices from searing. Place on the stove over medium-high heat for 2-3 minutes and serve with your fillet steaks.

Slicing: Always slice against the grain, not with the grain. It’s easier, looks neater and according to my non-scientifically-proven opinion… also tastes better.

Here are the internal temperature recommendations for different levels of doneness:

  • Rare: 125°F (red with red juices)
  • Medium Rare: 130°F (deep pink with reddish juices)
  • Medium: 140°F (light pink with clearer juices)
  • Medium well: 150°F  (slightly pink center with clear juices)
  • Well done: 160°F (fully cooked through, no longer pink at all)

The USDA recommends an internal temperature of at least 145°F for beef, for safe consumption, followed by a 3 minute rest. See full chart.

Nutrition is an estimate.

More recipe information

Course: Main Course

Cuisine: American

How do you cook a steak in a cast

Preheat a heavy cast-iron skillet over high heat until very hot, about 5 minutes. A hot skillet delivers the best sear. Add 1-2 tablespoons of vegetable oil to the pan (enough to coat the bottom). Immediately place your steaks in the hot skillet and sear them for 1 minute on each side.

What cooking method is best for tenderloin meat?

Best Way to Cook Beef Tenderloin or Filet of Beef Roasting or grilling are two of the best ways to cook a filet of beef. Roasting is a dry-heat method of cooking that usually involved higher heat, and it works best for roasting tender cuts of meat.

Is a beef tenderloin the same as a filet mignon?

Filet Mignon is part of the Tenderloin, which is why some see Tenderloin and Filet Mignon as one in the same. Filet Mignon is cut from the tip of the Tenderloin, a delicate and tender area of the loin primal.

Do you have to sear a beef tenderloin?

(Tip: You don't need to sear beef tenderloin before roasting.) Insert an oven-going meat thermometer in the thickest part of the roast. (If you don't have an oven-going meat thermometer, you can check the doneness with an instant-read thermometer near the end of cooking time.)