O'hara's Steak Sandwich Recipe

Preparation Steps

1. 1

   Prepare the Caramelized Onion Aioli

   In a skillet over medium heat, add 1 tablespoon of olive oil and the diced sweet onion. Sauté until the onions turn golden brown and caramelized, about 15-20 minutes. Add brown sugar and balsamic vinegar, stir to combine, and cook for an additional 5 minutes. Remove from heat and let cool. In a bowl, mix the cooled caramelized onions with mayonnaise and set aside.

2. 2

   Cook the Flank Steak

   Season the flank steak with salt and black pepper. In a grill or grill pan, heat 1 tablespoon of olive oil over medium-high heat. Grill the steak for about 4-5 minutes per side for medium-rare. Remove from heat, let it rest for 5 minutes, then slice thinly against the grain.

3. 3

   Sauté the Mushrooms and Onions

   In the same skillet used for the onions, add the sliced mushrooms and the remaining olive oil. Sauté over medium heat until the mushrooms are tender and browned, about 6-8 minutes. Add the sliced onion and cook for another 2-3 minutes until the onions are soft.

4. 4

   Assemble the Sandwich

   Slice the garlic hero rolls in half. Spread a generous amount of the caramelized onion aioli on each half. Layer with sliced flank steak, sautéed mushrooms and onions, and top with fresh arugula. Close the sandwich and serve immediately.