
Few dishes 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 tender and rosy — no complicated technique required. The real star is the herb butter made with ghee, 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 every single ingredient here is naturally free of wheat and grain, there's no need to scrutinize labels or swap anything out — it just works as written. Avocado oil handles the high-heat sear beautifully, and ghee brings a rich, nutty depth to the herb butter that regular butter simply can't match. Resting the steaks before serving is the small but crucial step that keeps all those juices locked in, so don't skip it. This is the kind of meal that feels like a special occasion even on a Tuesday night.
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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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