Dinner · Beef

Filet Mignon
with Sweet Potato

Pan-seared, oven-finished, and ready in under 40 minutes

Prep 20 min
Cook 15 min
Total ~35 min
Serves 1
Difficulty Easy
Filet mignon with sweet potato and herb butter on a plate
Low-Histamine Verified

Filet mignon is one of the very best choices for a low-histamine diet — it's a lean, mild cut that cooks quickly and pairs beautifully with a simple sweet potato. This recipe uses the classic steakhouse method: salt the steak early, sear it hot, then finish in the oven. The result is a deeply golden crust with a juicy, tender center.

The key is using freshly purchased meat and cooking it the same day. Histamine increases as meat ages, so fresh is everything. Coconut aminos make a wonderful low-histamine finishing sauce — mild, slightly savory, and a perfect complement to the steak.

Ingredients

The Steak

  • 5–8 ozfilet mignon, fresh (purchased same day)
  • To tastesea salt
  • Drizzleolive oil

The Sweet Potato

  • 4–6 ozsweet potato (1 medium)

To Serve (optional)

  • 1 tspunsalted butter (for steak or potato)
  • 1–2 tsplow-sodium coconut aminos (as a steak sauce)

🌿 Histamine-Safety Notes

Buy your filet mignon fresh the same day you plan to cook it — histamine builds as meat ages. Cook and eat immediately. Coconut aminos are a great low-histamine alternative to soy sauce or Worcestershire. If you have leftovers, freeze them right away rather than refrigerating overnight.

Instructions

  1. Salt the steak early. Place your filet mignon on a plate on the counter, season both sides with salt, and set a timer for 20 minutes. This draws out a little moisture, then reabsorbs it for a more flavorful, evenly seasoned steak.
  2. Preheat the oven to 375°F while the steak rests.
  3. Heat the pan. When the timer goes off, add a drizzle of olive oil to a stainless steel or cast iron skillet and heat over medium heat for 3–5 minutes, until the oil just begins to smoke.
  4. Sear the steak. Place the filet in the pan and cook for 2½–3 minutes per side without moving it, until a deep golden crust forms.
  5. Finish in the oven. Transfer the skillet to the oven and cook for 6 minutes for a 1-inch thick steak. If your steak is thicker, add 2–4 more minutes. (Use a meat thermometer if you have one: 130°F = medium-rare, 140°F = medium.)
  6. Microwave the sweet potato. While the steak is in the oven, pierce the sweet potato a few times with a fork and microwave for 3 minutes. Flip it over and microwave for another 3 minutes. Remove and cover loosely with foil to keep warm.
  7. Rest the steak. When the steak comes out of the oven, transfer it to a clean plate and tent loosely with foil. Let it rest for 5 minutes — this keeps all the juices inside.
  8. Serve immediately. Plate the steak alongside the sweet potato. Add a little butter to each if you like, or drizzle the steak with coconut aminos as a finishing sauce.

Tips & Variations

  • The 20-minute salting step makes a real difference — don't skip it. It seasons the steak all the way through, not just the surface.
  • Your pan must be truly hot before the steak goes in. If the oil isn't just smoking, wait a little longer — a proper sear is what creates that crust.
  • Coconut aminos can be found at most grocery stores or online. Low Sodium Coconut Aminos by Coconut Secret is a widely available brand.
  • Freeze any leftover steak immediately — don't leave it in the fridge overnight, as histamine builds quickly in cooked meat.