Heat oven to 375°F. Line 2 large cookie sheets with cooking parchment paper.
Unroll dough; separate into 12 breadsticks. Roll each breadstick into 12-inch rope. Tie ends of each rope into a knot so each breadstick looks like a bone. Place on cookie sheets. Brush each breadstick with butter. Top with Parmesan cheese.
Bake 12 to 14 minutes or until golden brown.
Serve with warmed marinara sauce.
Store leftovers in an airtight container for up to 3 days.