
Few meals feel as indulgent as a perfectly seared filet mignon, and this version delivers that steakhouse experience right in your own kitchen. A screaming-hot cast iron skillet builds a deep, caramelized crust on the outside while a quick oven finish keeps the center buttery and tender. The real star is the herb butter — softened ghee whipped together with fresh parsley, thyme, rosemary, garlic, and a hint of lemon zest — which melts luxuriously over the hot steak the moment it hits the plate. Because the entire recipe leans on whole, unprocessed ingredients, there's no need to scrutinize labels or worry about hidden legume-based fillers or flour blends that can sneak into marinades and compound butters. Ghee steps in beautifully here, giving the herb butter that rich, creamy quality without any dairy proteins, and avocado oil handles the high-heat sear like a champ. Resting the steaks for five minutes before serving is a small step that makes a huge difference, letting the juices redistribute so every slice is as succulent as possible. Whether you're cooking for a special occasion or just treating yourself on a weeknight, this is the kind of recipe that makes the whole effort feel completely worth it.
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Preheat the oven to 425°F (220°C). Remove the steaks from the refrigerator 20–30 minutes before cooking and pat them completely dry with paper towels. Season all sides evenly with the kosher salt and black pepper.
In a small bowl, combine the softened ghee, parsley, thyme, rosemary, garlic, flaky sea salt, and lemon zest, if using. Stir until evenly mixed, then set aside at room temperature.
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