Thanks everyone. Here's the recipe.

Filet Mignon
with marchand de vin sauce
For the best sear, get the pan really hot before adding the oil and filets. They’ll stick initially, but don’t move them until they naturally release from the pan.
Makes 2 servings (1/3 cup sauce)
Total time: 30 minutes
FOR THE SAUCE, ADD:
11/2 cups dry red wine
1/4 cup chopped shallots
1 large sprig fresh thyme
1 sprig fresh rosemary
1 dried bay leaf
WHISK IN:
1/2 cup reconstituted purchased
demi-glace
OFF HEAT, WHISK IN:
2 Tbsp. salted butter, diced
Salt to taste
FOR THE FILETS, HEAT:
2 Tbsp. olive oil
2 beef tenderloin filets
(8 oz. each and 2-inches
thick), seasoned with salt
and black pepper
Preheat oven to 400°.
For the sauce, add wine, shallots,
thyme, rosemary, and bay leaf to
a medium saucepan. Bring wine
mixture to a boil over high heat,
then reduce heat to medium;
simmer until wine is reduced
to 2 Tbsp., about 35 minutes.
Whisk in demi-glace and reduce
to 1/3 cup strained sauce.
Off heat, whisk in butter, piece by
piece, until completely emulsified,
then season sauce with salt.
For the filets, heat oil in a sauté
pan over high until shimmering.
Add filets and sear until brown
on one side, about 3 minutes. Flip
filets, then transfer pan to oven.
Roast filets to desired doneness,
15–16 minutes for medium-rare.
Transfer filets to a plate, tent with
foil, and let rest 10 minutes.
Per serving: 734 cal; 53g total fat (23g sat);
195mg chol; 1722mg sodium; 18g carb; 2g fiber;
47g protein