Step 1

On a cutting board, pat the filet mignon dry with paper towels and let sit at room temperature for 20-30 minutes.

Step 2

Preheat the oven to 450˚F (230˚C).

Step 3

Generously season all sides of the filet mignon with salt and pepper.

Step 4

Heat a medium, oven-safe stainless steel or cast iron skillet over high heat for 5 minutes. Add the grapeseed oil.

Step 5

Once the oil beings to smoke, add the filet mignon to the pan. Cook without moving for 2-3 minutes, until a crust has formed.

Step 6

Use tongs to flip the steak over, then add the butter, rosemary, and garlic to the pan.

Step 7

Tilt the pan and spoon the butter continuously over the steak for 2-3 minutes.

Step 8

Transfer the pan to the oven for 7 minutes for a medium rare steak.

Step 9

Transfer the steak to a cutting board and let rest for at least 10 minutes before slicing.

Step 10

Enjoy!