Preheat oven to 350°F (175°C) for baking the sliders until heated through and golden on top.
Slice the Hawaiian rolls in half horizontally, keeping the rolls connected, and place the bottom half in a baking dish.
1 (12-pack) Hawaiian Sweet Rolls
In a small bowl, stir together the Dijon mustard, mayonnaise, salt, and black pepper until smooth. Spread evenly over the cut side of the bottom rolls.
2 tbsps (30 g) Dijon mustard, 3 tbsps (45 g) mayonnaise, 1½ tsps (3 g) table salt, ½ tsp (1 g) black pepper
Layer the sliced ham evenly over the rolls, then place the Swiss cheese on top to build the classic chicken cordon bleu base. Distribute the shredded rotisserie chicken evenly over the cheese for consistent layering in each slider, then place the top half of the rolls over the filling.
1 lb (454 g) thinly sliced deli ham, 6 slices Swiss cheese, 2 cups (~300g) shredded rotisserie chicken
In a small bowl, combine the melted butter, minced garlic, panko breadcrumbs, and dried parsley. Spoon and spread the mixture evenly over the tops of the rolls to create a crisp, buttery topping, pressing lightly so it adheres.
4 tbsps (56 g) unsalted butter, 1 tbsp (3 cloves) garlic, ½ cup (30 g) panko breadcrumbs, 2 tsps (1 g) dried parsley
Cover the dish with foil and bake for 20 minutes. Remove the foil and continue baking for 5 minutes, or until the tops are lightly golden and the filling is heated through.
Remove from the oven, let rest briefly, then slice into individual sliders and serve warm while the cheese is melted and the tops are crisp.