
Few dinners feel as indulgent as a perfectly seared filet mignon, and this version delivers that steakhouse experience entirely from your own kitchen. The technique is classic and reliable — a screaming-hot cast iron skillet builds a deep, caramelized crust before the oven gently brings the center to a buttery medium-rare. What makes this recipe especially smart is the herb butter: softened ghee blended with fresh parsley, thyme, rosemary, garlic, and a hint of lemon zest creates a rich, aromatic finish that melts right into the steak as it rests. Since ghee replaces conventional butter here, the whole dish stays grain-free and completely free of fermented or leavened ingredients — no hidden additives to second-guess. Avocado oil handles the high-heat sear without smoking out your kitchen, and every other ingredient is straightforward and clean. The resting step is non-negotiable: those five minutes let the juices redistribute and the herb butter pool into every crevice. 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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