Heat oven to 350 F.
Open the crescent roll dough to lay them out flat.
In the large part of the triangle, place 1 tablespoon of pasta sauce.
Sprinkle the pasta sauce with pepperoni and mozzarella.
Roll up the crescent dough to enclose the sauce and cheese.
Arrange the pizza crescents on the pan and sprinkle with Parmesan cheese.
Bake at 350 degrees for 12 - 15 minutes.
Allow to cool slightly before serving. Center is extremely hot. Serve with pasta sauce for dipping.