Place all 12 Hawaiian sweet roll sliders onto a surface suitable for cutting. Using a serrated knife, slice in half while keeping tops and bottoms intact. It should be like one large sandwich.
Place the bottom layer of the rolls in a 9x13 pan.
Slather the 2 tablespoons mayonnaise on the bottom slab of Hawaiian rolls.
Evenly layer the 1/2 pound Swiss cheese, 1/2 pound ham and 1/2 cup sliced pickles over Hawaiian roll bottoms. Place the top of the muffins back on.
In a small bowl, whisk together the melted 1/2 cup unsalted butter, 1 tablespoon Dijon mustard, 1 teaspoon garlic powder, 1 teaspoon Worcestershire sauce and 1/4 teaspoon fine sea salt.
Pour the butter mixture over the tops of the rolls, trying to get as much on top as you can.
Cover with aluminum foil and bake for 20 minutes.
Remove aluminum foil and continue to bake until tops are slightly browned and cheese has melted.
Remove, cut into 12 individual sliders and serve hot.
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