Preheat the oven to 400 degrees F. Grease an 8-inch round cake pan with cooking spray.
Unroll the crescent dough onto a clean surface. Use a rolling pin to go over the dough a couple of times and stretch it a bit into a large rectangle. Line the dough with the pepperoni. Top evenly with the broccoli and sprinkle with garlic salt. Top with an even layer of mozzarella.
Roll up the dough. Use a sharp knife to cut into seven 1-inch rounds. Put the rounds in the prepared cake pan, crowding them together. Bake until golden brown, 25 to 30 minutes. Sprinkle with the Parmesan and let stand 5 minutes before serving.
This recipe has been updated and may differ from what was originally published or broadcast.