PREP: Preheat oven to 350°F (175°C). Generously grease a 9x13-inch baking pan. Line pan with parchment paper.
BUTTER: In a microwave-safe bowl, melt the butter and let it cool slightly. Whisk in remaining ingredients listed under "butter."
MAYO: Using a serrated bread knife, carefully slice the entire block of Hawaiian rolls in half horizontally, keeping the individual rolls attached (See Note 1). Spread ¼ cup mayo on each cut side of rolls. Place the bottom half of rolls in prepared pan.
LAYER IN FOLLOWING ORDER: Six slices of cheese, turkey, cranberry sauce, and six remaining slices of cheese. Do not add the top slab of rolls yet. Bake, uncovered, for 10 minutes.
BAKE AGAIN: Remove pan from oven and place top half of the rolls onto the sliders. Generously pour and brush butter mixture on the top and sides. It's fine if some pools at bottom of pan; this will make the base of the rolls buttery and crispy! Cover the pan with foil and bake for 20 minutes. Remove the foil and bake for an additional 10 minutes or until the top is golden brown and the cheese is melted.
ENJOY: Serve hot, cutting into individual sliders.
Notes
Note 1: Rolls: Keep the rolls intact and slice them in half horizontally so they open like a book.