Herbed Feta and Steak Sandwich

September  9, 2014
4 Ratings
Photo by Bobbi Lin
  • Makes 4 sandwiches
Author Notes

Many of my favorite sandwiches involve something akin to salad soaking into the scattered holes of a sliced and toasted artisanal baguette. Here’s one such favorite. —AntoniaJames

Test Kitchen Notes

WHO: AntoniaJames is a very formidable Food52 user, with 4 contest wins under her belt.
WHAT: A steak sandwich just as worthy of your lunchbox as your next barbecue.
HOW: Grilled, marinated steak gets a healthy dollop of mustardy feta sauce, a handful of greens, and a toasted baguette.
WHY WE LOVE IT: Marinated overnight and grilled to medium-rare, this steak is awesome on its own and spectacular with everything else. The unexpected addition of mustard to the feta sauce brightens the whole sandwich, which is hearty enough for dinner and comes together in under 30 minutes. —The Editors

What You'll Need
  • 2 tablespoons Dijon or coarse, sharp mustard
  • 2 tablespoons Worcestershire sauce
  • 3 tablespoons olive oil, divided
  • 4 cloves garlic, smashed but not chopped
  • 2 teaspoons reduced sodium soy sauce
  • 1 1/2 pounds flank steak
  • 1/2 cup feta, crumbled
  • 3 tablespoons plain yogurt
  • 2 sprigs dill fronds, coarsely chopped
  • 3 or 4 chives, finely chopped (optional)
  • 3 loosely-packed tablespoons coarsely chopped Italian parsley leaves
  • 1 tablespoon capers, lightly chopped, plus more to taste
  • Honey, to taste (optional)
  • Four 6- to 8-inch slices of a standard baguette or a sourdough roll, sliced lengthwise
  • Stoneground mustard, to taste
  • 1 handful lettuce leaves or arugula
  • 8 slices ripe tomato
  • Salt and freshly ground pepper, to taste
  1. To make a marinade for the steak, in a bowl that's just a bit larger than the steak, whisk together the Dijon mustard, Worcestershire sauce, 1 tablespoon of olive oil, garlic, and soy sauce. Using a very sharp knife, score the steak crosswise, making small slits about 1 inch apart. Place the steak in the marinade and rub it in, gently, making sure that the steak is thoroughly coated. Refrigerate for at least 2 hours, or up to overnight—the longer the better.
  2. Take the steak out of the refrigerator 30 to 45 minutes before you plan to grill it. Get your grill nice and hot, at least 400° F. While it heats, make an herbed feta sauce: Mix together the feta, yogurt, herbs, capers, and remaining 2 tablespoons of olive oil. Taste for salt and add some (if any) to taste along with some freshly ground pepper. If it’s a bit too sharp for your liking, stir in a touch of warmed honey and stir well.
  3. When the grill is ready, put the steak on, generously sprinkle it with salt and freshly ground pepper, and let it grill, undisturbed, for 6 to 7 minutes. Flip it over, grind a bit more pepper on it, and sprinkle it with just a touch more salt. Grill without moving the steak for another 6 minutes, or until the meat reaches an internal temperature in the thickest spot of 130 to 135° F for medium-rare. Remove it from the grill, lightly tent it with aluminum foil, and let sit it for at least 10 minutes.
  4. While the steak is resting, toast or grill the slices of baguette or rolls, if you like.
  5. To assemble the sandwich, spread the mustard on one side of each roll. Thinly slice the steak across the grain. Layer slices onto the rolls, Drizzle directly onto the bread any juices that have collected on the plate on which the steak rested.
  6. Distribute the herbed feta between the rolls. Put the lettuce or arugula on top followed by the sliced tomatoes. Put the two halves of each sandwich together.

See what other Food52ers are saying.

  • Two Trays Kitchen
    Two Trays Kitchen
  • Burf
  • healthierkitchen
  • bonheurcuisine
  • Kukla

Recipe by: AntoniaJames

See problem, solve problem. Ask questions; question answers. Disrupt, with kindness, courtesy and respect. ;o)

11 Reviews

Amy April 24, 2022
This is a fabulous recipe! Have made it multiple times - it's my go-to steak recipe. And - it's on the menu for tonight :) Thank you!!
AntoniaJames August 21, 2022
Thanks, Amy! That's so great to hear. ;o)
Two T. July 14, 2015
sounds amazing-- can the steak be done without a grill?
Amy August 21, 2022
I often use my grill pan and press on the cooktop.
Burf July 13, 2015
This was GREAT! Even with a short marination (this was a last minute meal), it was super. This will definitely be in the rotation.
healthierkitchen July 10, 2015
sounds delicious! I would use that herbed feta in lots of sandwiches!
AntoniaJames July 13, 2015
Thank you, HK. Yes, it's great on everything, including slices of artisanal bread toasted, with nothing else. Or used as a dip for carrots, etc. The possibilities are endless. ;o)
bonheurcuisine July 9, 2015
Congratulations Antonia, just voted for your delicious sandwich!! Good luck!!
AntoniaJames July 9, 2015
Thank you, bonheurcuisine, both for your kind words and for your vote! ;o)
Kukla July 9, 2015
Congratulations AJ on being a finalist! What a wonderful recipe!
You have my vote and good luck with many, many more!
AntoniaJames July 9, 2015
Kukla, you are so kind, as always. I just posted a note on your amazing-sounding sausage CP recipe, which I simply cannot wait to try. ;o)