Description
A hearty and flavorful French Onion Steak Sandwich featuring tender caramelized onions, grilled mushrooms, and perfectly cooked flank steak, topped with melted provolone cheese on toasted hoagie rolls. This American classic is a perfect blend of savory and satisfying tastes, ideal for a filling main course.
Ingredients
Scale
Steak and Seasoning
- 1 lb flank steak or ribeye
- Salt and black pepper to taste
- 2 tablespoons olive oil, divided
Onions and Mushrooms
- 2 large yellow onions, thinly sliced
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
- 1 tablespoon balsamic vinegar
- 8 oz cremini or button mushrooms, sliced
Sandwich Assembly
- 4 hoagie or French rolls, split
- 4 slices provolone cheese
- 2 tablespoons butter, softened (optional)
- 1 tablespoon Dijon mustard (optional)
Instructions
- Season the Steak: Generously season the flank steak or ribeye with salt and black pepper. Allow it to sit at room temperature while you prepare the onions and mushrooms to ensure even cooking.
- Caramelize the Onions: Heat 1 tablespoon of olive oil in a skillet over medium heat. Add the thinly sliced onions and thyme leaves. Cook slowly, stirring often, until the onions turn golden brown and caramelize, about 20 to 25 minutes. In the last few minutes, add the balsamic vinegar to deglaze the pan and intensify the flavor.
- Sauté the Mushrooms: In a separate skillet or grill pan, heat the remaining tablespoon of olive oil over medium heat. Add the sliced mushrooms and cook until they are browned and tender, which should take about 8 to 10 minutes.
- Cook the Steak: Grill or sear the steak over medium-high heat for about 3 to 4 minutes per side to achieve medium-rare doneness or adjust timing according to your preference. Once cooked, let the steak rest for 5 minutes to retain juices, then slice thinly across the grain.
- Toast the Rolls: Toast the hoagie or French rolls until lightly crispy. Optionally, spread the insides with softened butter or Dijon mustard for added flavor.
- Assemble the Sandwiches: Layer each toasted roll with sliced steak, caramelized onions, sautéed mushrooms, and a slice of provolone cheese.
- Melt the Cheese: Place the assembled sandwiches under a broiler for 1 to 2 minutes or until the provolone cheese has melted and begun to bubble.
- Serve: Serve the French Onion Steak Sandwiches hot for a delicious and satisfying meal.
Notes
- For enhanced flavor, marinate the steak in olive oil, garlic, and Worcestershire sauce for 30 minutes before cooking.
- You can substitute Swiss or Gruyère cheese in place of provolone for a different cheese profile.
- Add fresh arugula or sautéed spinach inside the sandwich for a refreshing touch of green.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Main Course
- Method: Stovetop
- Cuisine: American
