01 -
Preheat oven to 375°F and lightly spray a 9x13 baking dish with nonstick spray.
02 -
Keeping the rolls connected, carefully slice them in half horizontally. Remove the top row and set aside, then place the bottom row in the baking dish.
03 -
Sprinkle 1 cup of mozzarella on the bottom buns, then spread pizza sauce over the cheese. Layer the pepperoni in 5 rows of 4 slices each on top of the sauce.
04 -
Sprinkle the remaining 1¼ cups mozzarella over the pepperoni, then place the top row of connected buns on top.
05 -
Brush the melted butter on top of the buns, then sprinkle with grated Parmesan and Italian seasoning. Cover with aluminum foil and bake for 25 minutes.
06 -
Remove from oven and carefully slice the rows to release individual slider sandwiches. Serve while hot.