Cooking filet mignon in a cast iron skillet creates a beautiful crust through direct heat contact. This method is the best way to get a steakhouse-quality result at home. If you have been wondering how to cook filet mignon on cast iron skillet, you are in the right place. This guide covers everything from picking the right steak to resting it perfectly.
Filet mignon is a lean, tender cut from the tenderloin. It does not have much fat, so you need to be careful not to overcook it. A cast iron skillet holds heat better than most pans, giving you that deep brown crust fast. Let us get started.
Why Use A Cast Iron Skillet For Filet Mignon
Cast iron skillets are heavy and retain heat evenly. This means your steak gets a consistent sear across the whole surface. The pan stays hot even when you add a cold steak, which is key for a good crust.
Other pans might cool down too much when you add the meat. Cast iron does not have that problem. It also works great for finishing in the oven, which is a common step for thicker filets.
Choosing The Right Filet Mignon
Start with a good steak. Look for filets that are at least 1.5 inches thick. Thinner cuts cook too fast and are hard to get a good sear on without overcooking the inside.
Check for even marbling. While filet is lean, a little bit of fat running through it adds flavor. The color should be bright red, not brown or gray. Buy from a trusted butcher if you can.
Tools You Will Need
- Cast iron skillet (12-inch is ideal)
- Tongs (metal ones work best)
- Instant-read thermometer
- Paper towels
- High-smoke-point oil (like avocado or canola)
- Butter, garlic, and herbs (optional but recommended)
How To Cook Filet Mignon On Cast Iron Skillet
Now we get to the main event. Follow these steps exactly, and you will have a perfect filet every time. This is the core of how to cook filet mignon on cast iron skillet.
Step 1: Prep The Steak
Take the filet out of the fridge 30 to 45 minutes before cooking. Let it come to room temperature. This helps it cook evenly. Cold steak in a hot pan will seize up and cook unevenly.
Pat the steak dry with paper towels. Moisture is the enemy of a good crust. You want the surface as dry as possible. Season generously with kosher salt and black pepper on all sides. Do not be shy with the salt.
Step 2: Heat The Pan
Place your cast iron skillet on the stove over medium-high heat. Let it heat up for at least 5 minutes. You want the pan screaming hot. A drop of water should sizzle and evaporate instantly.
Add a high-smoke-point oil. Avocado oil is great because it can handle high heat without burning. Swirl the oil to coat the bottom of the pan. You only need about a tablespoon.
Step 3: Sear The Steak
Carefully lay the filet in the hot pan. It should sizzle loudly. If it does not, the pan is not hot enough. Let it cook undisturbed for 3 to 4 minutes. Do not move it around.
After 3 minutes, use tongs to flip the steak. You should see a deep brown crust. Sear the other side for another 3 to 4 minutes. For a 1.5-inch filet, this gives you a nice medium-rare.
Step 4: Add Butter And Aromatics
Turn the heat down to medium. Add 2 tablespoons of butter, a few crushed garlic cloves, and some fresh thyme or rosemary sprigs. Tilt the pan slightly and use a spoon to baste the steak with the melted butter.
Baste for about 1 minute. This adds flavor and keeps the steak moist. Be careful not to burn the butter. If it starts to smoke too much, remove the pan from the heat for a few seconds.
Step 5: Check The Temperature
Use an instant-read thermometer to check doneness. Insert it into the thickest part of the steak. For medium-rare, aim for 130°F to 135°F. For medium, 140°F to 145°F. Remember, the steak will cook a bit more while resting.
If you want it more done, you can finish it in the oven. Preheat your oven to 400°F. Transfer the skillet to the oven and cook for 3 to 5 minutes, depending on thickness. Check the temp again.
Step 6: Rest The Steak
Take the steak out of the pan and place it on a cutting board or plate. Let it rest for 5 to 7 minutes. Do not skip this step. Resting lets the juices redistribute inside the meat.
If you cut into it too soon, all the juices will run out onto the plate. Your steak will be dry. Cover it loosely with foil to keep it warm.
Temperature Guide For Filet Mignon
Here is a quick reference for doneness levels. Use your thermometer for accuracy.
- Rare: 120°F to 125°F (cool red center)
- Medium-rare: 130°F to 135°F (warm red center)
- Medium: 140°F to 145°F (pink center)
- Medium-well: 150°F to 155°F (slight pink)
- Well-done: 160°F and above (no pink)
Most people prefer filet mignon at medium-rare. The lean meat stays tender and juicy at this temp. Going past medium can make it tough.
Common Mistakes To Avoid
- Not drying the steak enough before seasoning
- Using a cold pan or not heating it long enough
- Moving the steak around while searing
- Overcrowding the pan (cook one or two filets at a time)
- Skipping the rest time
How To Season Filet Mignon
Simple seasoning is best for filet mignon. Salt and pepper are all you really need. The flavor of the beef should shine through. But you can add other things if you want.
Try a rub with garlic powder, onion powder, and a little smoked paprika. Or use a steak seasoning blend. Just do not overdo it. Filet is delicate, and too many spices can overpower it.
Oil And Butter Choices
Use an oil with a high smoke point for searing. Avocado, canola, or grapeseed oil work well. Olive oil has a lower smoke point and can burn, leaving a bitter taste.
Butter is added later for basting. It adds richness and helps brown the crust. Use unsalted butter so you can control the salt level. Clarified butter (ghee) is also great because it has a higher smoke point.
Serving Suggestions
Filet mignon pairs well with simple sides. Think roasted vegetables, mashed potatoes, or a fresh salad. A red wine sauce or a mushroom cream sauce can take it to the next level.
Slice the steak against the grain for the most tender bites. Serve it immediately after resting. Leftovers can be used in salads or sandwiches the next day.
Storing And Reheating Leftovers
Store leftover filet in an airtight container in the fridge. It will keep for 3 to 4 days. To reheat, use a low oven or a skillet with a little butter. Do not microwave it, or it will get tough.
You can also slice it cold for a steak salad. The flavor is still great even when not reheated.
Frequently Asked Questions
Can I Cook Frozen Filet Mignon In A Cast Iron Skillet?
It is not recommended. Frozen steak will not sear properly and will cook unevenly. Always thaw it in the fridge overnight first, then let it come to room temperature before cooking.
How Do I Clean My Cast Iron Skillet After Cooking Steak?
Let the pan cool slightly. Rinse it with hot water and use a stiff brush to remove food bits. Do not use soap if you can avoid it. Dry it thoroughly and rub a thin layer of oil on it to prevent rust.
What If My Steak Sticks To The Pan?
This usually means the pan was not hot enough or you tried to flip it too early. Let the steak cook undisturbed until it releases naturally. If it sticks, give it another minute.
Can I Use Olive Oil For Searing Filet Mignon?
Regular olive oil has a low smoke point and will burn. Extra virgin olive oil is even worse. Stick to avocado, canola, or grapeseed oil for the initial sear. You can add olive oil later for flavor if you want.
How Thick Should The Filet Be For This Method?
Aim for at least 1.5 inches thick. Thinner filets cook too fast and are hard to get a good crust without overcooking. Thicker cuts (2 inches) work well too, but you may need to finish them in the oven.
Final Tips For Perfect Filet Mignon
Practice makes perfect. The first time you try how to cook filet mignon on cast iron skillet, it might not be perfect. That is okay. Pay attention to the heat and the timing.
Use a thermometer every time until you get a feel for it. Do not be afraid to experiment with different seasonings and basting ingredients. The basic method stays the same.
Cast iron skillets get better with use. The more you cook with them, the more non-stick they become. Take care of your pan, and it will take care of your steaks.
Now you have all the information you need. Go ahead and try it. Your family and friends will be impressed. Enjoy your perfectly cooked filet mignon.