Preheat your oven to 350°F (175°C). This is the perfect temperature for getting the rolls golden brown and the cheese melted.
In a baking dish, melt 2 Tablespoons of butter and pour it evenly across the bottom. This will create a delicious buttery layer that flavors the rolls.
Remove the package of Hawaiian sweet rolls from its bag carefully. Without separating the rolls, use a serrated knife to slice the entire batch in half horizontally, creating a top and bottom layer.
Place the bottom half of the rolls in the baking dish, sitting on top of the melted butter. Ensure they are snug and touching for that perfect slider texture.
Evenly layer the provolone cheese slices on top of the rolls, covering them generously with the creamy goodness.
Next, pile on the roast beef slices, ensuring each slider is hearty and filled. You can be generous here; no one likes a skimpy slider!
Gently place the top half of the rolls over the beef. This will create the sandwich structure needed for baking.
In a microwave-safe bowl, melt the remaining 2 Tablespoons of butter. Once melted, stir in the garlic powder and dried onion flakes until well combined.
Use a brush to apply the butter mixture generously over the tops of the rolls, ensuring they’re coated for that golden finish.
Cover the dish with foil and bake for 25 minutes. You’re looking for the cheese to melt and the beef to be warmed through. The aroma will be irresistible!
Remove the foil and bake for an additional 5 minutes. This will allow the tops to become slightly crispy while keeping the insides nice and gooey.
Prepare the au jus sauce according to the package directions while the sliders are cooling slightly.
Cut the rolls into individual sliders and serve warm with the au jus sauce on the side for dipping. Enjoy!