Step 1 : Preheat oven to 375° F. Line a large baking pan with parchment paper. Slice crescent rolls lengthwise into thirds. Brush all over with dijon mustard. Place a mini hot dog on the thick end of each triangle and roll up.
Step 2 : Arrange the pigs in a blanket, side by side, in a circle on the baking sheet. They should be touching! Brush with egg wash and sprinkle with salt and poppy seeds.
Step 3 : Bake for 15 to 20 minutes, until the crescents are golden. Let cool for at least 20 minutes.
Step 4 : Lay rosemary sprigs around the inside of the wreath and place a small bowl filled with ketchup in the center.