Making your own Philly Cheesesteak Sliders is a straightforward process. Follow these easy steps:

1. Prepare Steak: If your steak isn’t pre-sliced, freeze it for about 30 minutes to make slicing easier. Thinly slice the ribeye against the grain.
2. Sauté Vegetables: In a large skillet over medium heat, add olive oil. Sauté the sliced onions, bell peppers, and mushrooms (if using) for about 5-7 minutes until they are softened and slightly caramelized. Season with salt, pepper, and garlic powder.
3. Cook Steak: Add the thinly sliced steak to the skillet with the vegetables. Cook for an additional 5-7 minutes, stirring often, until the steak is browned and cooked through.
4. Preheat Oven: While the steak is cooking, preheat your oven to 350°F (175°C).
5. Assemble Sliders: Cut the slider buns in half horizontally. On the bottom half, layer the steak and vegetable mixture evenly. Place a slice of provolone cheese over the meat.
6. Top With Buns: Place the top half of the sliders on each sandwich.
7. Brush with Butter: Brush the melted butter over the tops of the sliders for added flavor and a golden finish.
8. Bake: Place the assembled sliders on a baking sheet and bake in the preheated oven for about 10-15 minutes, or until the cheese is melted and the tops are golden brown.
9. Garnish and Serve: Remove from the oven and let sit for a minute. Optionally, sprinkle chopped fresh parsley over the top for a pop of color. Slice the sliders apart and serve warm.