I’ve got really early memories of my dad making a steak sandwich which was absolutely gorgeous and always such a treat. In this steak sandwich recipe, I want to take the joy of a steak sandwich to the next level by kind of taking the mighty steak off its pedestal a bit and putting most of the focus on awesome onions to create the best steak sandwich ever.–Jamie Oliver
LC Leftover Steak Note
Leftover steak. To some this is a novel concept, even an oxymoron. If that’s you, forgive us and have a chuckle at our expense. But if you’re the sorta person who occasionally gets carried away and impulse buys an extra rib eye or strip—or 3—when you’re standing at the butcher counter, then you know what we’re talking about. Rest assured, leftover steak works really quite splendidly in this steak sandwich. Simply sizzle the cold steak in a cast-iron skillet to warm it, then follow the directions from there. Use an extra drizzle olive oil if the reheated steak’s resting juices are scarce.
- Quick Glance
- Quick Glance
- 10 M
- 55 M
- Serves 4
IngredientsEmail Grocery List
Recipe Testers Reviews
So, first let me say that THIS WAS AN AMAZING STEAK SANDWICH! REALLY YUMMY! SUPER DELICIOUS! #SOGOODIWANTEDANOTHER! Okay, so now that's out of the way, I can tell you the details. I mistakenly thought that this was going to be another regular run-of-the-mill steak sandwich, but what makes it different are THE ONIONS, specifically the vinegar-infused, caramelized onions. So good! I thought that the sugar would overpower the vinegar, but they played really nicely together. The other thing I liked was the spicy kick of the mustard. I didn't have Colmans, but in looking it up, I found that it’s a mustard with a spicy kick, so I used a Dijon mustard that I love that has a really good helping of horseradish—definitely more kick than regular mustard. Finally, the hit of lemon on the watercress added such a nice brightness to the very rich sandwich. I used skirt steak for my glorious steak sandwich. The cooking time of 3 minutes was spot on. Loved the suggestion of drizzling the steaks resting juices on the warm bread. Yum! This is definitely the sandwich that you should make with any leftover steak!
Although the recipe indicates the rosemary is optional, I’d say using the herb is not to be missed. I loved the finished character it added to the steak sandwich. I didn't bother removing the needles before searing the meat. Deep brown and thickly lacquered with a sweet-sour gastrique, the caramelized onions were center stage here. I only used about 1 tablespoon olive oil to get the onions sautéing in a cast-iron skillet. Since I only have 1 cast-iron skillet, I waited for the onions to be done in order to repurpose the pan for the steak. Pounded out to 3/4 inch thickness, my steak took 4 minutes on each side for medium-rare. After resting the steak, I sliced it against the grain and conservatively loaded up the bread. I didn't want the steak piled so densely it would be difficult to bite through, a failing of many a steak sandwiches. Layering at maximum 2 slices high seemed to work well for me. I loved the lemony watercress and mustard, which played so well with the rich meat. I don't see any reason why you couldn't make the onions on a Sunday and keep them to make this steak sandwich for a weeknight meal later in the week.