Easy Steak Sandwich Recipe with Garlic Herb Butter (Print version)

Tender sliced steak, garlic herb butter, caramelized onions, and melty cheese tucked into crisp toasted bread.

# Ingredients:

For the garlic herb butter

01 - 6 tablespoons (85 g) unsalted butter, softened
02 - 2 cloves garlic, finely grated or minced
03 - 2 tablespoons finely chopped fresh parsley
04 - 1 tablespoon finely chopped fresh chives
05 - 1/2 teaspoon lemon zest
06 - 1/4 teaspoon kosher salt
07 - 1/4 teaspoon black pepper

For the sandwiches

08 - 1 lb (450 g) ribeye, strip steak, sirloin, flank, or skirt steak
09 - 1 teaspoon kosher salt, plus more to taste
10 - 1/2 teaspoon black pepper
11 - 1 tablespoon olive oil
12 - 1 large yellow onion, thinly sliced
13 - 1 baguette or 4 crusty sandwich rolls, split
14 - 4 slices Havarti or provolone cheese
15 - 1 cup (25 g) baby arugula

# Instructions:

01 - Mix the softened butter with garlic, parsley, chives, lemon zest, salt, and pepper until evenly combined. Set aside at room temperature while you cook.
02 - Pat the steak dry and season with salt and pepper. Heat the oil in a large skillet over medium-high heat, then sear the steak until browned and cooked to your liking, about 3-5 minutes per side depending on thickness.
03 - Transfer the steak to a cutting board and rest for 5 minutes. Slice thinly against the grain so the meat stays tender in the sandwich.
04 - Add the sliced onion to the same skillet. Cook over medium heat for 8-10 minutes, stirring often, until soft and golden. Add a splash of water if the pan gets too dark.
05 - Spread the cut sides of the baguette or rolls with garlic herb butter. Toast under the broiler or in a skillet until lightly crisp and fragrant.
06 - Layer the sliced steak and onions on the buttered bread. Top with cheese and broil open-faced for 1-2 minutes, just until the cheese melts.
07 - Add arugula, close the sandwiches, and serve right away while the bread is crisp and the cheese is warm.

# Good to know:

01 - Resting the steak before slicing keeps the sandwich juicy.
02 - Slice against the grain for the most tender bite.
03 - Best served immediately after broiling.

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