01 - Preheat oven to 375°F. Grease a 9x13-inch baking dish with butter or nonstick spray.
02 - Using a bread knife, slice the slider buns horizontally in one piece to create a top and bottom slab, keeping the individual rolls attached. Place the bottom slab in the prepared baking dish.
03 - Spread the pizza sauce evenly over the bottom buns. Sprinkle half of the shredded mozzarella over the sauce in an even layer.
04 - Arrange the pepperoni slices in a single layer covering the entire surface of the cheese. Sprinkle the remaining mozzarella evenly over the pepperoni.
05 - Place the top slab of buns over the filling, pressing down gently to adhere.
06 - In a small bowl, whisk together the melted butter, honey, hot sauce, garlic powder, and dried Italian herbs until combined. Brush the mixture generously over the tops and sides of the buns using a pastry brush.
07 - Sprinkle the grated Parmesan and red pepper flakes evenly over the glazed tops.
08 - Cover the dish loosely with aluminum foil and bake for 15 minutes. Remove the foil and continue baking for 5 more minutes, or until the cheese is fully melted and the tops are golden brown.
09 - Remove from the oven and let cool for 3 to 5 minutes. Garnish with fresh chopped basil if desired. Slice along the bun seams into individual sliders and serve warm.