Allow steak to rest before slicing to keep it juicy. Use sturdy bread to support the filling. For extra flavor, add sautéed mushrooms or a garlic spread.
Juicy seared steak layered with caramelized onions and melted cheese on a toasted roll for a comforting and flavorful sandwich.
1½ pounds (680 g) ribeye or sirloin steak
1 tablespoon (15 ml) olive oil
1 teaspoon (5 g) kosher salt
½ teaspoon (2 g) freshly ground black pepper
½ teaspoon (2 g) garlic powder
1 large yellow onion, thinly sliced (about 1½ cups / 200 g)
1 tablespoon (14 g) unsalted butter
4 sturdy sandwich rolls
4 slices provolone, mozzarella, or Swiss cheese
1 tablespoon (15 ml) olive oil or softened butter for toasting
Optional: 1 cup (30 g) fresh arugula or baby spinach
Caramelize onions in butter over medium heat for 12–15 minutes.
Season steak with olive oil, salt, pepper, and garlic powder.
Sear steak 3–4 minutes per side until desired doneness. Rest 10 minutes.
Toast rolls cut-side down until golden.
Slice steak against the grain.
Assemble with steak, onions, and cheese.
Bake at 375°F (190°C) for 3–5 minutes until cheese melts.