Classic pigs in a blanket wrapped in flaky pastry dough are a fun, family-favorite party appetizer. These bite-sized treats are beloved by kids and adults alike at any gathering.
Preheat the oven to 375°F (190°C) and line a baking sheet with parchment paper for even browning.
Unroll the crescent roll dough and separate it into triangles; cut each triangle into three smaller strips.
Wrap one mini hot dog in a strip of dough, keeping the overlap tight but not stretched so the pastry puffs well. Repeat for all hot dogs.
Place assembled pigs in a blanket seam side down on the prepared baking sheet, leaving at least 1 inch between each for even cooking.
Beat the egg and brush lightly over each pastry-wrapped hot dog. Sprinkle with poppy seeds for extra crunch and bake for 15–18 minutes until golden brown.