Filet Mignon (Reverse Sear) Step-by-Step Guide

If you’ve ever spent good money on a beautiful filet mignon, only to cut into it and realise it's overcooked, you know that heartbreak. That's why my go-to method for thick-cut steaks, especially filet mignon, is the reverse sear. Whether you’re grilling or using your oven inside, this two-step process gives you complete control over doneness while delivering that perfect, golden-brown crust, thanks to the Maillard reaction (more on that later).

The reverse sear flips the usual steak-cooking process on its head. Instead of starting with a screaming-hot pan or grill, you begin with gentle heat to slowly bring the steak up to temperature. This process helps retain more moisture. Once it's just shy of perfect, you hit it with a blazing-hot sear to get that crispy, flavourful crust. 

Here's how to do it, whether you’re grilling or using your oven inside, along with tips to make sure your filet mignon turns out restaurant-quality every time.

Ingredients

• Filet Mignon Steaks
• Kosher salt
• Ground pepper
• Rosemary sprigs
• Avocado oil
• Compound butter recipe

See recipe card for quantities.

Step-by-Step Guide (Grill & Oven Method)

Choosing the Right Filet Mignon:

Start with high-quality beef, preferably from a trusted butcher. Look for steaks that are evenly cut and about 2 inches thick. This will help ensure they cook evenly. If the filet isn’t holding its shape, you can tie it with butcher's twine to keep it nice and round while it cooks.

Season and Let Rest:

Generously season both sides of your steaks with kosher salt (about 2 teaspoons per steak) and a few cracks of freshly ground black pepper. Salt far in advance (ideally the day before) or right before cooking to avoid excess moisture and grey streaks.

Option 1: Indirect Grilling Method

Preheat & Set Up

Preheat your grill to 200°F. Set up for two-zone cooking (one side with heat, one side without). Lay fresh rosemary sprigs in a cold, oven-safe skillet and place the steaks on top.

Slow Roast

Place the skillet on the cool (indirect) side of the grill and close the lid. Roast slowly until the internal temperature reaches 120°F (for medium-rare), flipping once at the 20-minute mark. (See Steak Doneness Temperature Guide for other doneness temperatures.) This takes approximately 30-45 minutes, depending on thickness.

➡ Tip: Always use an instant-read thermometer to check doneness rather than relying on time alone.

Searing for the Perfect Crust

This is where the magic happens. The Maillard Reaction creates that deep, golden-brown crust and incredible flavour.

Grill Searing

Increase the grill to high heat. Sear the steaks over direct heat for 90 seconds per side. Remove from the heat.

➡ Pro Tip: Carryover cooking will raise the internal temperature another 5°F as the steaks rest.

Option 2: Indirect Oven Method

Preheat

Preheat your oven to 225°F (107°C).

The Rack Setup

Place seasoned filets on a wire cooling rack set over a rimmed baking sheet. Elevating the steak allows air to circulate evenly and keeps the surface dry, which is crucial for a great sear.

Slow Roast

Roast until the internal temperature reaches 115°F for medium-rare. This typically takes 45-60 minutes, depending on thickness. (See Steak Doneness Temperature Guide for other doneness temperatures.)

The Rest (Crucial Step)

Remove from the oven and rest on a plate for 10 minutes. This allows the juices to redistribute so they stay in the steak, not on your cutting board.

The Flash Sear – Get It Ripping Hot

The Maillard Reaction creates that deep, golden-brown crust and incredible flavour.

While the steaks rest, heat a oven-safe skillet or cast-iron skillet over high heat. Add a high smoke point oil (such as avocado or grapeseed oil) until shimmering.

Searing for the Perfect Crust

Sear steaks for 60 seconds per side. In the final 30 seconds, add: 1 knob of butter, 1 smashed garlic clove and 1 sprig of rosemary. Spoon the foaming butter over the steaks to baste.

➡ Pro Tip: Carryover cooking will raise the internal temperature another 5°F as the steaks rest.

Rest and Serve

Let the steaks rest for at least 5 minutes before slicing. Cutting too soon will cause the juices to run out. Top with a pat of compound butter to melt over the surface.

Serving Suggestions

Serve the steaks whole or sliced.

A filet mignon this good deserves simple, bold sides: Rosemary smashed potatoes (crispy from the skillet drippings), grilled seasonal vegetables and garlic butter mushrooms.

Steak Doneness Temperature Guide

➡ Tip: Always use an instant-read thermometer to check the steak's temp before searing and again after resting. The steak temperature will rise another 5°F during the resting period, so be sure to pull it early to reach your desired doneness!

The Maillard Reaction: Why Searing Last Matters

When steak is exposed to high heat, the amino acids and sugars on its surface caramelize, creating a deep brown crust. This is called the Maillard reaction, and it's what makes a steak taste rich and flavourful. The key to a perfect sear is a dry surface, which is exactly what you get when you cook your steak slowly first.

➡ Bonus Tip: If you have time, dry-brine your steak by salting it 12-24 hours in advance and leaving it uncovered in the fridge. This helps the surface dry out, leading to an even better sear.

Common Mistakes (and How to Avoid Them)

 ❌Skipping the Thermometer

• Guessing the temperature can lead to undercooked or overcooked steak.
• Fix: Use an instant-read thermometer or a probe thermometer to check internal doneness.

 ❌Not Letting the Steak Rest

• Cutting into a steak too soon causes juices to run out, making it drier.
• Fix: Let the steak rest for at least 5 minutes before slicing.

 ❌Not Getting the Pan or Grill Hot Enough

• A weak sear means you lose out on flavour and texture.
• Fix: Make sure your pan is at least 600°F (use an infrared thermometer to check).

 ❌ Using the Wrong Pan

• A nonstick pan won't give you that perfect crust.
• Fix: Use a Stainless Steel Pan or cast-iron skillet for best results.

FAQs About Cooking Filet Mignon

Recommended Equipment for the Best Steak

1. Instant Read Thermometer - Essential for checking doneness.
2. Infrared Thermometer - Helps measure pan or grill surface temperature.
3. Stainless Steel Pan or Cast-Iron - Retains heat well and develops a better sear.
4. Wire Rack & Baking Sheet - Helps air circulate around the steak for even cooking if you are using your oven.
5. Sharp Knife - A dull knife tears the meat instead of slicing cleanly.

➡ Bonus Tip: Use tongs, not a fork, to avoid piercing the meat and letting juices escape.

Cooked in the Hestan 11″ NanoBond Skillet. Proud Hestan Culinary Ambassador. The Opinions in this post are always my own.

📖 Recipe

Filet Mignon (Reverse Sear) Step-by-Step Guide

If you've ever spent good money on a beautiful filet mignon, only to cut into it and realise it's overcooked, you know that heartbreak. That's why my go-to method for thick-cut steaks, especially filet mignon, is the reverse sear. This two-step process gives you complete control over doneness while delivering that perfect, golden-brown crust, thanks to the Maillard reaction (more on that later).

Here’s how to do it, whether you're grilling or using your oven inside, along with tips to make sure your filet mignon turns out restaurant-quality every time.

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Cook Time 48 minutes mins

Inactive time 30 minutes mins

Total Time 1 hour hr 23 minutes mins

Course Dinner, Entree, Main Course

Cuisine North American

Servings 2 People

Cook ModePrevent your screen from going dark

Ingredients

  

1x2x3x

• 2 – 10 ounce Filet Mignon Steaks room temperature
• 4 teaspoons Kosher salt
• freshly ground pepper
• 2 -3 sprigs of rosemary
• Avocado oil or a neutral oil
• 2 pads of compound butter See the recipe in the NOTES below

Instructions

 

Choosing the Right Filet Mignon

• Start with high-quality beef, preferably from a trusted butcher. Look for steaks that are evenly cut and about 2 inches thick. This will help ensure they cook evenly. If the filet isn’t holding its shape, you can tie it with butcher's twine to keep it nice and round while it cooks.

Season the Steaks

• Generously season both sides of your steaks with kosher salt (about 2 teaspoons per steak) and a few cracks of freshly ground black pepper. Salt far in advance (ideally the day before) or right before cooking to avoid excess moisture and grey streaks.

OPTION 1: Indirect Grilling Method

Preheat & Set Up

• Preheat your grill to 200°F. Set up for two-zone cooking (one side with heat, one side without). Lay fresh rosemary sprigs in a cold, oven-safe skillet and place the steaks on top.

Slow Roast

• Place the skillet on the cool (indirect) side of the grill and close the lid. Roast slowly until the internal temperature reaches 120°F (for medium-rare), flipping once at the 20-minute mark. This takes approximately 30-45 minutes, depending on thickness.
• ➡ Tip: Always use an instant-read thermometer to check doneness rather than relying on time alone.

Searing for the Perfect Crust

• This is where the magic happens. The Maillard Reaction creates that deep, golden-brown crust and incredible flavour.

Grill Searing

• Increase the grill to high heat. Sear the steaks over direct heat for 90 seconds per side. Remove from the heat.
• ➡ Pro Tip: Carryover cooking will raise the internal temperature another 5°F as the steaks rest.

OPTION 2: Indirect Oven Method

Preheat

• Preheat your oven to 225°F (107°C).

The Rack Setup

• Place seasoned filets on a wire cooling rack set over a rimmed baking sheet. Elevating the steak allows air to circulate evenly and keeps the surface dry, which is crucial for a great sear.

Slow Roast

• Roast until the internal temperature reaches 115°F for medium-rare. This typically takes 45-60 minutes, depending on thickness.

The Rest (Crucial Step)

• Remove from the oven and rest on a plate for 10 minutes. This allows the juices to redistribute so they stay in the steak, not on your cutting board.

The Flash Sear – Get It Ripping Hot

• The Maillard Reaction creates that deep, golden-brown crust and incredible flavour.

  While the steaks rest, heat an oven-safe skillet (or cast-iron) over high heat. Add a high smoke point oil (such as avocado or grapeseed oil) until shimmering.

Searing for the Perfect Crust

• Sear steaks for 60 seconds per side. In the final 30 seconds, add: 1 knob of butter, 1 smashed garlic clove and 1 sprig of rosemary. Spoon the foaming butter over the steaks to baste.

Rest and Serve

• Let the steaks rest for at least 5 minutes before slicing. Cutting too soon will cause the juices to run out. Top with a pat of compound butter to melt over the surface.

Serving Suggestions

• Serve whole or slice the steaks.

  A filet mignon this good deserves simple, bold sides: Rosemary smashed potatoes (crispy from the skillet drippings), grilled seasonal vegetables and garlic butter mushrooms.

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Video

Notes

How to Make an Easy Compound Butter for Steaks

A good compound butter melts into the steak, adding richness and extra flavour. Here's a simple recipe:

Herb & Garlic Compound Butter

• ½ cup unsalted butter, softened
• 1 teaspoon fresh thyme, chopped
• 1 teaspoon fresh rosemary, chopped
• 1 clove garlic, minced
• ½ teaspoon salt
• ¼ teaspoon black pepper

Mix all ingredients in a bowl until well combined. Roll into a log using plastic wrap and refrigerate for at least 1 hour. Slice and place on hot steak before serving.

➡ Flavour Variations: Add blue cheese, truffle oil, or smoked paprika for different flavour profiles!

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