Step 1: Preheat your oven to 350°F (175°C) and lightly grease a 9×13 inch baking dish.
Step 2: Carefully slice the entire slab of Hawaiian rolls horizontally using a large serrated knife, keeping the tops and bottoms together. Place the bottom half of the rolls into the prepared baking dish.
Step 3: If using, spread the marinara or pizza sauce evenly over the bottom half of the rolls. This adds an extra layer of classic pizza flavor to your Pepperoni Pizza Hawaiian Roll Sliders.
Step 4: Layer half of the shredded cheese evenly over the bottom half of the rolls (and sauce, if used).
Step 5: Arrange a generous layer of pepperoni over the cheese. Overlap them slightly to ensure every slider gets a good amount of savory goodness.
Step 6: Sprinkle the remaining half of the shredded cheese over the pepperoni. This double layer ensures maximum gooeyness in your Pepperoni Pizza Hawaiian Roll Sliders.
Step 7: Place the top half of the Hawaiian rolls back over the cheese and pepperoni layers. Gently press down to compact the sliders slightly.
Step 8: In a small bowl, melt the butter. Stir in the minced garlic, Italian seasoning, and red pepper flakes (if using). This aromatic blend is crucial for enhancing the flavor of your Pepperoni Pizza Hawaiian Roll Sliders.
Step 9: Generously brush the garlic butter mixture over the tops of the rolls, making sure to get some in between the cracks. This butter bath is what gives them their golden-brown finish and incredible flavor.
Step 10: Cover the baking dish tightly with aluminum foil. Bake for 10-15 minutes, or until the cheese is melted and bubbly. Covering prevents the tops from browning too quickly while the cheese melts.
Step 11: Remove the foil and bake for another 5-10 minutes, or until the tops of the rolls are golden brown and the pepperoni is slightly crispy at the edges. This step is vital for that perfect crunch!
Step 12: Remove from the oven and let rest for a few minutes before slicing into individual sliders. Garnish with fresh parsley if desired. Serve warm and enjoy these irresistible Pepperoni Pizza Hawaiian Roll Sliders!