This summer sandwich is bursting with flavor.
Ingredients
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Vegetable oil, for grates
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3 boneless rib-eye steaks (each about 1 pound and 1 inch thick), excess fat removed
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Coarse salt and ground pepper
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1 large red onion, sliced ½ inch thick
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2 baguettes, split
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5 ounces fresh goat cheese, room temperature
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¼ cup grainy mustard
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2 bunches arugula (about 10 ounces total), stems trimmed
Directions
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Heat grill to high; lightly oil grates. Season steaks with salt and pepper; grill 4 to 5 minutes per side for medium-rare. Transfer to a plate; let rest 10 minutes.
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Meanwhile, grill onion until tender and charred, 4 to 5 minutes per side. Transfer to a plate; separate into rings. (To store, refrigerate steaks and onion, up to 1 day.)
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Assemble sandwiches: Thinly slice steaks against the grain. Dividing evenly, spread top halves of bread with cheese, and bottom halves with mustard. Pile steak, onion, and arugula on bottom halves; close sandwiches. Cut each sandwich into quarters, and serve.
Cook's Notes
If you're making these for a party, grill the steaks one day ahead.