Preheat the oven to the temperature shown on the croissant dough package, usually around 350°F (175°C). Open the can of croissant dough and carefully unroll it to reveal 12 triangle-shaped pieces.
Cut along the perforated lines to make 24 smaller triangles, giving you enough dough to wrap each sausage.
Place one mini sausage at the wide end of a small triangle.
Roll it up, repeating until all sausages are wrapped.
Beat the eggs in a small bowl and lightly brush each wrapped sausage with the egg wash so the dough browns nicely.
Sprinkle poppy seeds over the egg-washed dough for added flavor and a nice look.
Arrange the wrapped sausages on a parchment-lined baking sheet, leaving space between them for even baking.
Bake for 15–18 minutes, or until the dough is golden brown and cooked through.
Remove from the oven, let cool slightly, and serve with your favorite dipping sauces such as ketchup, mustard, or barbecue sauce.