Authentic Philly Cheesesteak

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1. 1Step 1: Place 2 beef ribeye steaks (or top round steaks) in the freezer for 30 minutes for easier slicing, if desired. Using a sharp knife, slice as thinly as possible across the grain. Season with 1/2 teaspoon salt and 1/2 teaspoon black pepper, or to taste.
2. 2Step 2: In a large skillet over medium-high heat, heat 1 tablespoon vegetable oil. Add 1 medium yellow onion, thinly sliced, and cook until soft and lightly browned, about 5 to 7 minutes. Remove from the skillet and set aside. Skip this step if not using onion.
3. 3Step 3: Add the sliced steak to the skillet in a single layer. Sear for 1 to 2 minutes per side, or until browned.
4. 4Step 4: Use a spatula to chop and separate the steak into smaller pieces. Return the cooked onions to the pan, if using, and stir to combine.
5. 5Step 5: Reduce heat to low. Top each portion of the chopped steak with 4 slices Provolone cheese (or preferred cheese). Let the cheese melt, about 1 minute.
6. 6Step 6: Split and lightly toast 4 hoagie rolls. Fill each roll with the hot steak and cheese mixture. Serve immediately.