These pepperoni and cheese stuffed crescent rolls are a delicious and easy snack or appetizer. To make these crescent rolls, you will need crescent roll dough, sliced pepperoni, shredded mozzarella cheese, and an egg. Preheat your oven to 375 degrees F. Unroll the crescent roll dough and separate into triangles. Place a few slices of pepperoni and a sprinkle of shredded mozzarella cheese on each triangle. Roll up the crescent rolls and place on a baking sheet. Beat the egg and brush it over the tops of the crescent rolls. Bake for 12-15 minutes or until golden brown. Serve warm.