1. Preheat oven to 375°F.
2. Cut each beef frank into 3 equal parts and set aside. Unroll the crescent roll dough and cut each piece into 3 smaller triangles (they won't all be the exact same size, which is okay).
3. Roll each piece of frank in one piece of crescent roll dough. You may stretch the dough a bit to make it the right width around the frank.
4. Place on a baking sheet and bake for 9-12 minutes until golden brown. Serve with ketchup and Dijon mustard on the side and enjoy!