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Preheat the grill.
Set the broiler to high heat so it’s ready when you need it.
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Prepare the rolls.
Using a serrated knife, carefully split the roll(s) in half lengthwise, making sure they remain attached on one side to resemble a book. Place the open rolls on a rimmed baking sheet.
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Add the cheese.
Evenly place the cheese on the two halves of the open roll(s). Slide the baking sheet with the prepared rolls under the broiler and let the cheese melt, which usually takes 2 to 3 minutes.
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Assemble the sandwiches.
It’s time to get to the highlight of this sandwich creation! Generously spoon the prepared salad mixture over the melted cheese. For an extra touch, sprinkle the salad with grated parmesan.

