Preheat oven to 375F. Unroll the crescent dough and cut each triangle in half lengthwise. Set aside.
Sprinkle each slice of corned beef with a pinch of Swiss cheese and top with one little smokie. Wrap the corned beef around the cheese and little smokie, forming a roll shape. Repeat until you have wrapped all 16 little smokies.
Grab a crescent triangle and brush one side with spicy brown mustard and top with 1 tsp. Sauerkraut.
Place one corned beef wrapped little smokie towards the thicker end of the crescent triangle and then roll into a crescent roll shape. Repeat this process until all 16 have been wrapped.
Transfer these to the parchment paper included in the packaging on top of a large baking sheet. Brush each one with melted butter, then sprinkle with caraway seeds. Bake until golden, about 18 - 20 minutes.