
Few cuts of beef feel as special-occasion as filet mignon, and this version delivers a steakhouse-worthy result right in your own kitchen. The method is straightforward but precise — a screaming-hot cast iron sear followed by a quick oven finish — and that combination is what gives you a deep, caramelized crust with a perfectly rosy center. The real showstopper is the herb butter made from softened ghee blended 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. Using ghee instead of conventional butter keeps this firmly in paleo territory without sacrificing any of that rich, silky finish you'd expect from a classic preparation. Every ingredient here is clean and whole — avocado oil, fresh herbs, quality beef — so there's no need to scan labels or worry about hidden additives sneaking into your dinner. Whether you're cooking for a date night or just treating yourself on a Tuesday, 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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