MARINATED FLANK STEAK SANDWICHES

Marinated Flank Steak Sandwiches image

Provided by Martha Stewart

Time 50m

Number Of Ingredients 11

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1 small white onion, sliced into 1/4-inch rings
1/2 cup fresh orange juice (from 2 oranges)
1/4 cup fresh lime juice (from 2 to 4 limes)
1/4 teaspoon ground cumin
2 garlic cloves, crushed
1 1/2 pounds flank steak, trimmed of excess fat
Coarse salt and freshly ground pepper, to taste
2 tablespoons unsalted butter, room temperature
1 loaf ciabatta (16 inches), split horizontally, halved crosswise
6 ounces Gruyere cheese, thinly sliced
1 whole dill pickle, thinly sliced crosswise

Steps:

Combine onion, juices, cumin, and garlic in a shallow dish. Add steak, and let stand, turning once, for 20 minutes.
Preheat a grill pan to medium-high and oven to 400 degrees. Pat steak dry, and season with salt and pepper. Grill to desired doneness, 5 to 6 minutes per side for medium-rare. Let rest.
Grill onion for 2 to 3 minutes. Discard marinade.
Butter bread. Grill, buttered side down, for 2 minutes. Place cheese on bottom halves, and bake in oven until melted.
Slice steak thinly, against the grain. Top cheese with pickle, steak, onion, and bread. Halve each sandwich, and serve.