These Roast Beef Sliders are a breeze to throw together with a punchy horseradish and green onion sauce and melty provolone cheese. An easy weeknight meal, potluck or party dish!
Preheat the oven to 350 degrees F. In a medium size mixing bowl combine mayonnaise, sour cream, horseradish and sliced cream onions. Stir to combine and season with a pinch of salt and pepper to taste.
Slice the Hawaiian rolls in half lengthwise. Lay the bottom half of the rolls on a baking sheet or pan. Spread about half of the horseradish mixture evenly over the rolls. Then top with the roast beef and layer on the provolone cheese. Spread the remaining horseradish mixture onto the top half of the rolls and place on top.
In a small mixing bowl combine melted butter, garlic, Worcestershire sauce, mustard, onion powder and garlic powder. Stir to combine then brush the butter mixture over the top of the rolls. Sprinkle on poppy seeds and cover with foil. Bake at 350 degrees F for 30-35 minutes until the cheese is melted and the sliders are golden brown. Serve warm and enjoy!