Freeze Steak: Place the steak in the freezer for about 20 minutes until firm but not frozen. This makes it easier to slice.
1 ½ lbs boneless ribeye steak
Prepare Butter Mixture: Preheat oven to 350°F. In a small bowl, mix melted butter, parsley, garlic, a pinch of salt, and a pinch of pepper. Set aside.
2 tablespoons unsalted butter, 1 tablespoon chopped fresh parsley, 1 clove garlic, 1 ½ teaspoons salt, ¼ teaspoon black pepper
Cook Vegetables: Heat 2 tablespoons of oil in a large skillet over medium-high heat. Add sliced onion and bell pepper, season with ½ teaspoon salt, and cook for about 10 minutes until soft and golden. Transfer to a plate.
3 tablespoons vegetable oil, 1 medium yellow onion, 1 large green bell pepper
Cook Steak: In the same skillet, heat the remaining tablespoon of oil over medium-high heat. Thinly slice the steak against the grain, then add it to the skillet. Season with the remaining 1 teaspoon salt and ¼ teaspoon black pepper. Cook for about 5 minutes, stirring occasionally, until browned. Add the cooked vegetables back to the pan, toss to combine, and remove from heat.
Assemble Sliders: Using a serrated knife, slice the rolls in half horizontally. Place the bottom halves on a small baking sheet. Spread mayonnaise on the bottom halves, then layer with the steak mixture and cheese slices. Close with the top halves of the rolls.
12 mini Hawaiian rolls, ¼ cup mayonnaise, 8 slices American or provolone cheese
Bake Sliders: Brush the tops of the rolls with the butter mixture. Bake for 10-12 minutes until the cheese melts and the buns are golden.