Steak with Arugula, Caramelized Onions & Balsamic Mushrooms

Directions

1. Warm a skillet over medium heat until hot.
2. Peel and slice the onion into thin half-moon pieces.
3. Add a light coating of oil to the pan and cook the onions, stirring frequently, until they soften and begin to brown, about 10 minutes.
4. Heat another skillet over medium-high heat and prepare the mushrooms.
5. Trim or wipe the mushrooms and slice them.
6. Season the steak generously with salt and pepper.
7. Oil the bottom of the second skillet and add the steak; cook to your preferred doneness, then transfer to a plate and loosely cover with foil.
8. Return the mushrooms to the pan with the onions; season with salt and pepper and cook, stirring occasionally, until tender, about 5–6 minutes.
9. Add a splash of balsamic to the onion and mushroom mixture and scrape up any browned bits, cooking until the liquid thickens slightly, 2–3 minutes.
10. Rinse and dry the arugula; arrange a bed on plates and top with the onion-mushroom mix and sliced steak, finishing with a quick drizzle if desired.