1-First, prepare the steak by seasoning the thinly sliced ribeye with kosher salt and black pepper. Let it rest at room temperature for about 10 minutes to boost flavor, as mentioned in the recipe details.

2-Next, heat a skillet over medium-high heat and sear the steak slices until they’re nicely browned, then shred them while cooking for that classic texture.

3-While the steak rests, make the garlic butter by mixing softened unsalted butter with minced garlic, salt, and pepper. Spread this mixture evenly on each half of the sliced Italian bread loaf.

4-Now, cook the onions and optional green bell peppers in olive oil and butter until they caramelize, adding a sweet depth to the dish.

5-Divide the seared steak evenly over the bread halves, then add the caramelized onions and peppers on top.

6-Cover everything with shredded mozzarella and parmesan cheese, then bake for 12-14 minutes until the bread turns golden brown and the cheese melts perfectly.

7-Finally, slice the bread into 8 servings and garnish with chopped parsley for a fresh finish. Each serving clocks in at about 497 calories, making it a hearty yet manageable option.