Follow these step-by-step instructions to create your Loaded Philly Cheesesteak Fries:

Step 1: Prepare the Fries

1. Preheat your oven to the temperature recommended on the bag of frozen fries or according to your homemade recipe.
2. Spread the fries in a single layer on a baking sheet and bake until they are golden brown and crispy, usually around 20-25 minutes. Flip halfway through cooking for even crispiness.

Step 2: Cook the Steak and Vegetables

1. Heat olive oil in a large skillet over medium-high heat.
2. Add the sliced steak to the skillet and season with salt and pepper. Cook until the steak is browned and cooked through, about 4-5 minutes. Remove the steak from the skillet and set aside.
3. In the same skillet, add the onions and peppers. Cook until they are soft and caramelized, around 5-7 minutes. Remove from heat and set aside with the steak.

Step 3: Make the Cheese Sauce

1. In a saucepan, melt butter over medium heat.
2. Add flour and whisk continuously to form a smooth paste, cooking for about 1 minute.
3. Gradually add milk, whisking constantly to prevent lumps, until the mixture thickens, about 2-3 minutes.
4. Lower the heat and add the shredded provolone and cheddar cheeses, stirring until the cheese is fully melted and the sauce is smooth.

Step 4: Assemble the Loaded Fries

1. Arrange the cooked fries on a large serving platter or individual plates.
2. Top with sliced steak, followed by the sautéed onions and peppers.
3. Drizzle the cheese sauce generously over the top.
4. Add optional toppings like jalapeños, parsley, or hot sauce for extra flavor and heat.