01 -
Preheat the oven to 350℉. Spray a 9x13-inch pan with cooking spray, or line a baking sheet with aluminum foil or parchment paper.
02 -
Using a serrated knife, slice the Hawaiian rolls in half lengthwise so the top half and bottom half remain intact.
03 -
Mix mayonnaise with garlic powder or garlic paste. Spread the mixture over the bottom half of the rolls.
04 -
Evenly layer shredded roast beef and cheese slices over the mayo sauce, and cover with the top half of the rolls.
05 -
Melt butter in the microwave or in a small saucepan. Whisk in brown sugar, Worcestershire sauce, and Dijon mustard. Brush the mixture generously over the tops of the rolls. Sprinkle with poppy seeds if desired.
06 -
Cover the sliders with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 5 minutes until the tops are golden brown.
07 -
Let the sliders rest for a few minutes. Transfer to a cutting board and cut into individual sandwiches. Garnish with parsley flakes and grated Parmesan cheese if preferred.