TL;DR
- You can cook a restaurant-quality filet mignon in an air fryer in under 20 minutes.
- The method works for steaks 1.5 to 2 inches thick; thinner cuts overcook fast.
- Season simply with salt, pepper, and butter – the beef does the work.
- Use a meat thermometer: 130°F (54°C) for medium-rare, 140°F (60°C) for medium.
- Rest the steak for 5 minutes after cooking – skipping this step loses the juices.
What You Need Before You Start
- 1 filet mignon steak, 6-8 oz, at least 1.5 inches thick
- Kosher salt and freshly ground black pepper
- 1 tablespoon olive oil or avocado oil
- 1 tablespoon unsalted butter (for finishing)
- Optional: 1 garlic clove, fresh thyme or rosemary
- An air fryer with at least a 4-quart basket
- An instant-read meat thermometer
One critical prep step: Pull the steak from the refrigerator 30 minutes before cooking. A cold center leads to uneven cooking – the outside overcooks before the middle reaches temperature.
Step 1: Season the Steak Generously
Pat the steak completely dry with paper towels. Moisture on the surface creates steam, which prevents a proper sear. Coat both sides and the edges with kosher salt and black pepper. Do not be shy with the salt – filet mignon is a lean, mild cut and needs seasoning to carry flavor.
Rub a thin layer of oil over the entire surface. This helps the crust form evenly in the air fryer.
Step 2: Preheat the Air Fryer to 400°F (200°C)
Preheat the air fryer for 3 to 5 minutes before adding the steak. Most air fryer guides skip this step, but it matters. Placing a steak into a cold basket delays crust formation and adds unpredictable cook time.
If your air fryer does not have a preheat function, simply run it empty at 400°F for 3 minutes.
Step 3: Cook the First Side
Place the steak in the basket with at least 1 inch of space around it. Do not stack or crowd. Cook at 400°F based on your target doneness:
| Doneness | Internal Temp | First Side | Flip Side |
|---|---|---|---|
| Rare | 120-125°F (49-52°C) | 4 min | 3 min |
| Medium-Rare | 130-135°F (54-57°C) | 5 min | 4 min |
| Medium | 140-145°F (60-63°C) | 6 min | 5 min |
| Medium-Well | 150-155°F (65-68°C) | 7 min | 5 min |
These times apply to a 6-8 oz steak that is 1.5 to 2 inches thick. Thinner steaks cook faster – check the temperature 2 minutes early on your first attempt.
Step 4: Flip and Finish Cooking
At the halfway mark, open the basket and flip the steak using tongs – not a fork. Piercing the meat releases juices. Close the basket and finish cooking the second side.
In the last 60 seconds, place a small pat of butter directly on top of the steak. The circulating heat will melt it over the meat as it finishes.
Step 5: Check the Internal Temperature
Pull the steak out and insert a meat thermometer into the thickest part, from the side rather than the top. Read the temperature and compare to the table in Step 3.
If the steak is under temperature, return it to the air fryer in 1-minute increments. Do not guess – filet mignon costs too much to overcook.
Important: The steak will rise 3 to 5 degrees while resting. Pull it 3 to 5 degrees below your target temperature to account for carryover cooking.
Step 6: Rest the Steak for 5 Minutes
Place the steak on a cutting board or warm plate and cover loosely with foil. Let it rest for exactly 5 minutes. Cutting too early pushes all the juice out of the meat and onto the board.
While it rests, you can make a quick pan sauce or compound butter to serve alongside.
Common Problems and How to Fix Them
| Problem | Likely Cause | Solution |
|---|---|---|
| Steak is gray, no crust | Steak was wet or air fryer not preheated | Always pat dry and preheat before cooking |
| Overcooked outside, cold center | Steak went in cold from the fridge | Bring to room temperature for 30 min first |
| Steak is dry and tough | Cooked past 155°F or skipped the rest | Use a thermometer every time; always rest |
| Uneven cooking | Steak too thin or overcrowded in basket | Use 1.5+ inch cuts; cook one at a time |
| No flavor | Under-seasoned or skipped butter finish | Season all sides including edges; finish with butter |
Frequently Asked Questions About Cooking Filet Mignon in an Air Fryer
How long does it take to cook filet mignon in an air fryer?
A 6-8 oz filet mignon cooked at 400°F takes 8 to 12 minutes total, depending on thickness and desired doneness. Medium-rare is typically 9 minutes for a 1.5-inch steak – 5 minutes on the first side, 4 on the second.
What temperature should filet mignon be cooked to?
The USDA recommends 145°F (63°C) for whole cuts of beef (USDA Food Safety, 2024). Most steak enthusiasts pull filet mignon at 130-135°F for medium-rare, which reaches 133-138°F during the rest period. Use a thermometer rather than timing alone.
Do you need to flip filet mignon in an air fryer?
Yes. Flipping halfway through ensures both sides develop an even crust and the interior cooks uniformly. Air fryers circulate heat from the top, so the underside needs direct contact with the hot basket to brown properly.
Can you cook frozen filet mignon in an air fryer?
Yes, but the results are less consistent. Cook from frozen at 400°F for 18 to 22 minutes, flipping at the halfway point. Add 2 to 3 minutes to account for the frozen core. A thermometer is non-negotiable when cooking from frozen.
Why does my air fryer filet mignon come out dry?
Dry steak almost always means overcooked or under-rested. Filet mignon has very little fat, so it dries out faster than rib eye or strip steak. Pull it at the correct internal temperature and rest it for the full 5 minutes before cutting.
Does filet mignon need oil in an air fryer?
A light coat of oil on the surface helps the crust form and prevents the exterior from drying out. Use about 1 tablespoon of a high-smoke-point oil like avocado or light olive oil. Do not spray oil directly into the air fryer basket – the aerosol propellants can damage non-stick coatings over time.
Summary
- Bring the steak to room temperature 30 minutes before cooking.
- Pat it dry, oil it, and season all sides including the edges.
- Preheat the air fryer to 400°F for 3 to 5 minutes.
- Cook 8 to 12 minutes total, flipping once at the halfway point.
- Pull at 3 to 5 degrees below target temperature and rest for 5 minutes before cutting.