Ingredients
Equipment
Method
- Pat the Filet Mignon steaks dry with paper towels. Season generously with salt and freshly ground black pepper on all sides.
- Heat 1 tablespoon olive oil and 1 tablespoon butter in a cast iron skillet (or heavy-bottomed skillet) over medium-high heat until the pan is smoking hot.
- Carefully place the steaks in the hot skillet. Don't overcrowd the pan; cook in batches if necessary.
- Sear the steaks for 3-4 minutes per side for medium-rare, or longer depending on your desired level of doneness. Use tongs to turn the steaks.
- Add minced garlic and rosemary (if using) to the skillet during the last minute of cooking, spooning the garlic butter over the steaks.
- Use a meat thermometer to check the internal temperature: Rare: 125°F (52°C), Medium-Rare: 130-135°F (54-57°C), Medium: 135-145°F (57-63°C), Medium-Well: 145-155°F (63-68°C), Well-Done: 155°F+ (68°C+)
- Remove the steaks from the skillet and let them rest on a plate or cutting board for at least 5-10 minutes. Tent loosely with foil.
- While the steaks are resting, prepare the red wine sauce. In the same skillet (or a separate small saucepan), heat 1 tablespoon olive oil over medium heat.
- Add the finely chopped shallot and cook until softened, about 2-3 minutes.
- Pour in the beef broth and red wine. Bring to a simmer and let it reduce by about half, which will take around 10-15 minutes.
- Stir in the balsamic vinegar.
- If you want a thicker sauce, whisk together cornstarch with a tablespoon of cold water to form a slurry. Gradually whisk the slurry into the sauce until it reaches your desired consistency.
- Remove the saucepan from the heat and whisk in the cold butter until it's melted and the sauce is smooth and glossy.
- Season the sauce with salt and freshly ground black pepper to taste.
- Slice the filet mignon steaks against the grain. Arrange the slices on plates and generously spoon the red wine sauce over the top.
Notes
For a richer flavor, sauté sliced mushrooms with the shallots. A pinch of red pepper flakes can be added for a little heat. If the sauce is too acidic, add a pinch of sugar to balance the flavors. Serve with Rosemary Garlic Mashed Potatoes, a simple green salad, or asparagus.
