Preheat oven to 375 ° F.
Spread the croissant dough and be sure to attach the “stitches”.
With a fine point knife, cut the dough into strips.
Wrap each sausage with a strip of dough as if they were the bandage of a mummy, and leave some space at one end to create the "face" of the mummies.
Put the mummies on a baking sheet, with the "face" facing up.
Bake for 12 to 15 minutes.
Remove from the oven and let cool for about 10 minutes.
With a toothpick, make the eyes with a pinch of mustard.