Roll out the dough into a long, flat piece. Place the prepared poppy seeds into the center of the piece.
Seal both ends of the dough, keeping the poppy seeds on the inside. Roll the dough into a spiral shape. Place buns next to each other on a lined baking sheet.
Let buns rise for about an hour. Using a small bowl, whisk eggs with sugar. Glaze each bun using an egg mixture.
Bake in a preheated oven, at 350 °F, for about 30 minutes or until golden brown.