These easy Steak & Cheese Sliders are loaded with tender sirloin steak, caramelized onions, melted provolone cheese, buttery garlic buns, and served with a homemade garlic aioli for the perfect appetizer, game day snack, or family dinner.
In a small bowl, combine the mayonnaise, garlic, lemon juice, Dijon mustard, salt, and black pepper. Stir until smooth. Cover and refrigerate for at least 30 minutes.
Heat olive oil in a large skillet over medium heat. Add the onions and sauté for 5 to 7 minutes until soft and lightly caramelized. Transfer to a plate.
Season the steak with salt and pepper. Using the same skillet, cook the steak over medium-high heat for about 2 to 3 minutes per side until browned. Remove from heat.
Preheat oven to 350°F. Arrange the bottom halves of the slider buns on a baking sheet. Top evenly with: Cooked steak, Sautéed onions, and Provolone cheese. Place the top buns over the cheese.
Mix together: Melted butter, Garlic powder, and Dried parsley. Brush generously over the tops of the buns.
Bake for 10 to 12 minutes, or until the cheese is melted and the tops are lightly golden.
Serve immediately with the chilled garlic aioli for dipping. Enjoy while hot.
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Recipe Tips
For the most tender steak, place the sirloin in the freezer for about 20 minutes before slicing. It makes it much easier to cut thin, even slices that cook quickly without becoming tough.