Calabrian Chili Steak Sandwich

1. Heat olive oil in a large skillet over medium heat. Add thinly sliced onion and cook for approximately 10 minutes, stirring occasionally, until softened and beginning to caramelize.
2. Add 2 tbsp butter and allow it to melt into the onions. Continue cooking for another 2–3 minutes.
3. Roughly chop the shaved beef into smaller, bite-sized pieces. Add to the skillet with the onions.
4. Season with salt, garlic powder, and black pepper. Cook, stirring occasionally, until the beef is fully cooked.
5. Stir in 1–2 tbsp Italian Bomba Hot Pepper Sauce, depending on your preferred spice level. Mix until the beef and onions are evenly coated.
6. Spread the remaining 2 tbsp butter over the cut sides of the sandwich rolls. Toast until lightly golden.
7. Pile the steak and onion mixture onto the toasted rolls. Top with provolone or light cheddar cheese and broil for approximately 1–2 minutes, watching closely, until the cheese is melted.
8. Finish with fresh arugula, close your sandwich, and enjoy!