Have you ever had a REAL steak sandwich? One actually made with a steak? This Cheesy 7 Layer Steak Sandwich is a TRUE steak sandwich that will make you want to eat it again and again! Before you can say that it can’t possibly be healthy, let me share with you the vegetables that are included:
Okay, the mushrooms and spinach are vegetables, but this sandwich is so yummy that every part of it should be considered healthy! 🙂
The video below will show you how this amazing culinary experience is made, but you will also find step-by-step pictures to help you make this fantastic sandwich!
Cheesy 7 Layer Steak Sandwich
- 2 (12-oz) sirloin or top loin steaks*
- Kosher salt and freshly ground pepper
- ¼ cup plus 2 tablespoons vegetable oil, divided
- 2 tablespoons unsalted butter
- ½ large yellow onion, chopped
- 2 cups button mushrooms, chopped
- 1 large sourdough bread boule
- 6 slices cheddar cheese
- 1 cup baby spinach
- 6 strips cooked bacon
- 6 slices Provolone or Swiss cheese
*Sirloin or top loin steaks work great for this recipe, but you can use any boneless cut of steak that you like best.
Season each steak generously with salt and pepper, making sure to rub the salt and pepper into the sides of the steak.
In a cast iron skillet, heat the vegetable over high heat until smoking hot. Lay the steaks in the pan and cook for about 2 minutes. Flip the steaks, then add the butter, swirling it around the pan. Using a large spoon, scoop the melted butter over the tops of the steak, basting them continuously. Cook for about 2 minutes to get medium rare. (Check the steaks with an instant read thermometer if you have one; you want an internal temperature of about 135˚F.) Set the steaks aside on a cutting board to rest.
Wipe out the skillet and heat the remaining 2 tablespoons of oil over medium-high heat. Add the onion and mushrooms and sauté, stirring constantly, until caramelized, about 20 minutes.
Using a serrated knife, slice the top off the bread and scoop out the insides to create a bread bowl. Nestle one steak into the bottom of the bread bowl. Layer the cheddar cheese evenly on top. Add the caramelized onions and mushrooms and use a spoon to spread them evenly over the cheese. Top with the spinach, then the bacon, then the Swiss cheese. Finally, put the second steak on top, tucking it under the lip of the bread bowl. Cover with the bread lid and wrap the entire loaf in foil.
Place the wrapped sandwich in the fridge and put a cutting board on top of it. Stack books on the cutting board to compress the sandwich. Chill in the fridge for at least 5 hours.
Preheat the oven to 250˚F. Remove the foil from the sandwich and place it on a baking sheet. Bake for 20 minutes, until the breadis slightly crisp. Slice into wedges and enjoy!