To get started, heat your oven to 350°F. Unravel the crescent rolls and separate the dough into 8 triangles. Lay them onto a flat surface.
Place 2 pieces of ham and 1 piece of cheese onto each triangle. Roll up each crescent, ending at tip of triangle. Place onto an ungreased cookie sheet and set aside.
In a small bowl, whisk together the melted butter, minced onion, and Dijon mustard. Season with salt and pepper to taste brush evenly on each crescent roll.
Bake 15 to 20 minutes or until golden brown. Serve warm and Enjoy!