Philly Cheesesteak

Preparation

1. Step 1

   Heat the oven to 350 degrees. Remove steak from the freezer. Heat a large skillet over medium heat, then add the oil and onions. Sprinkle with a pinch of salt and cook the onions, stirring every few minutes, until they begin to soften, brown, and have slightly crispy ends, about 15 minutes. Transfer to a bowl.

2. Step 2

   Pull the meat slices apart (they will still be slightly frozen; see Tip 1) and add them to the pan over medium-high. As the meat cooks, use a spatula to continue separating the slices so they cook evenly. When the meat is mostly cooked but still a little pink, about 4 minutes, season with salt and pepper, and cook until no longer pink and the edges are browned, about 4 minutes more.

3. Step 3

   Meanwhile, slice the hoagies in half lengthwise, only about ¾ of the way through. Arrange them cut-side down on an oven rack and toast until lightly browned, about 5 minutes.

4. Step 4

   Once the meat is fully cooked, adjust the heat to medium-low and add the onions back to the pan, stirring until combined. Divide the filling into four piles, and top each with 3 slices of Provolone (if using Cheez Whiz, see Tip 2). Cook until the cheese melts, 3 to 4 minutes. While the cheese melts, remove the hoagies from the oven. Use a spatula or pastry scraper to transfer the meat onto the hoagies. Slice in half and eat immediately.