Steak Sandwich

Ingredients

• •12 ounces steak
• •kosher salt
• •pepper
• •2½ tablespoons olive oil
• •2 onions
• •½ teaspoon thyme leaves
• •¾ cup mayonnaise
• •1 tablespoon dijon mustard
• •1 tablespoon whole-grain mustard
• •2 tablespoons cream
• •⅛ teaspoon salt
• •4 sub rolls
• •½ cup baby arugula

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Method

From foodista.com — read the original

1. 1Season the steak with salt and pepper on both sides.
2. 2Heat 1 tablespoon of olive oil in a pan over high heat until it's almost smoking, then sear the steak on each side for 1 minute. Reduce the heat to low and cook the steak until desired doneness.
3. 3Remove from heat and let sit for 10 minutes. Slice the steak into strips.
4. 4Using the same pan, heat 1 1/2 tablespoons of olive oil over medium heat.
5. 5Add the onion and thyme and saute for 10 minutes, until the onions are caramelized, stirring occasionally.
6. 6Whisk mayo, mustards, sour cream, and salt into a bowl and set aside.
7. 7To assemble the sandwiches, spread a tablespoon of mayo sauce on each side of the roll.
8. 8Place a layer the steak strips on top of the mayo, sprinkle with salt and pepper, and top with the caramelized onion rings.
9. 9Place the baby arugula on top of the onion rings, and cover the sandwiches with the top half of the buns.