Flat Iron Steak Salad Recipe

Open your share box, find a flat iron, and you might not know what you are looking at. That is normal. It is one of the most underrated cuts in the whole animal, and most people have never cooked one. The good news is that it is one of the more forgiving cuts, as long as you follow the one rule: slice it against the grain. And a salad is about the easiest way to turn it into a full meal.

The salad part is simple on purpose. The cut is the thing worth learning.

What is a flat iron

The flat iron comes from the shoulder, or chuck. For years it got ground into burger because butchers did not know what to do with the tough seam of connective tissue running through that muscle. Once someone figured out how to cut around the seam, the flat iron turned out to be one of the most tender steaks on the animal, second only to the tenderloin, with far more flavor and a fraction of the price.

It is well marbled, it takes a marinade well, and it cooks fast. For a share buyer staring at an unfamiliar vacuum-sealed package, it is about the friendliest cut you can start with.

If you want the full breakdown of where it sits and what else comes from the chuck, see our beef cuts guide. For how it stacks up against the other steaks, there is also our best cuts of beef steak roundup.

The one thing not to skip: slice against the grain

This is the only way to ruin a flat iron, so it is worth saying first. Look at the cooked steak and you will see the muscle fibers all running in one direction. Slice across those fibers, not along them. Cutting against the grain shortens the fibers and gives you a tender bite. Cutting with the grain gives you long, chewy strings, even on a perfectly cooked steak.

Rest the steak, find the grain, then slice thin across it. That is the whole trick.

Ingredients

Serves 2 as a main, or 4 as a side.

For the steak (citrus-soy marinade):

• 1 flat iron steak, about 1 lb
• 1/3 cup olive oil
• 1/4 cup soy sauce
• 1/4 cup fresh orange juice
• 2 tbsp fresh lemon juice
• 2 tbsp Worcestershire sauce
• 3 to 4 cloves garlic, minced or grated
• 1 tsp Dijon mustard (optional, but it helps)
• 1 tsp honey or maple syrup (optional)
• Black pepper
• A pinch of red pepper flakes (optional)

For the salad:

• 1 head romaine or other crunchy lettuce, chopped
• 1 cup cherry or grape tomatoes, halved
• 1 cucumber, sliced
• 1 red bell pepper, sliced
• A handful of mini sweet peppers, sliced into rings
• 1 cup red cabbage, shredded
• 1/2 cup shredded carrot
• 1/2 cup crumbled feta

For the dressing:

• 3 tbsp olive oil
• 1 tbsp fresh orange juice
• 1 tbsp fresh lemon juice
• 1 tsp Dijon mustard
• 1 tsp honey
• Black pepper
• A tiny splash of soy sauce, or salt to taste

Keeping the dressing in the same citrus family as the marinade is what ties the plate together. It should brighten the salad, not soak it. You want the steak to stay the main flavor, so dress lightly and toss just before serving.

How to cook the flat iron

1. Marinate. Whisk together everything except the steak. Add the steak and turn to coat. Marinate at least 30 minutes, or up to a few hours in the fridge. Hold off on adding salt, the soy and Worcestershire bring enough.
2. Get the pan hot. A cast iron pan or a grill, as hot as you can get it. Flat iron is thin and you want a hard sear before the inside overcooks.
3. Sear. Pat the steak dry, then cook about 3 to 4 minutes per side for medium-rare, depending on thickness. You are looking for a deep brown crust.
4. Check the temperature. Pull it at 125 to 130°F for medium-rare. Flat iron is best on the rare side of medium. Past medium it starts to firm up and you lose what makes the cut special.
5. Rest. Let it sit 5 to 10 minutes before cutting. This is not optional. Cutting early dumps the juices onto the board instead of keeping them in the steak.
6. Slice against the grain. Thin slices, across the fibers, as covered above. Cut those into bite-size pieces if you are putting them on a salad.

A note on temperature: 125 to 130°F reflects a medium-rare preference. The USDA recommends cooking whole beef steaks to 145°F with a 3-minute rest. Cook to the temperature you are comfortable with.

Build the salad

Toss the lettuce, tomatoes, cucumber, peppers, cabbage, and carrot in a large bowl with a light dressing. Lay the sliced steak on top, scatter the feta over it, and serve. Putting the steak on top rather than tossing it through keeps the slices showing and the crust intact.

That is it. A cut most people have never cooked, and the cooking itself is quick once it has had time in the marinade. After you have the method down, the same marinated, against-the-grain flat iron works just as well in a stir fry, folded into fajitas or tacos, or sliced over eggs the next morning. The salad is just where we started.

Notes and swaps

• No cast iron or grill? A heavy stainless pan works. The only requirement is high heat.
• The marinade is a starting point. More chili flakes, a little extra honey, or a splash of fish sauce all work. Use what you have.
• If your flat iron is unusually thick, go by temperature more than time. Share-box cuts are not always perfectly uniform.
• Leftover steak is good cold the next day, which makes this an easy one to cook once and eat twice.
• The same method works for skirt and flank steak if you have those in your share instead.