Prepare the yeast mixture by combining warm milk and sugar in a bowl. Sprinkle yeast on top and set aside until bubbly.

Make the dough by whisking flour and salt, then adding the yeast mixture, melted butter, and egg. Stir until soft dough forms.

Knead the dough on a floured surface for 5-7 minutes until smooth and elastic.

Let the dough rise in a greased bowl for 1 hour or until it doubles in size.

Cook the sausage in a skillet over medium heat until browned, about 5-7 minutes. Drain excess fat and let it cool.

Shape the buns by dividing the dough into 12 pieces, filling with sausage and mozzarella, then sealing them.

Form flower shapes by pinching the tops of the buns and pressing down at the base. Arrange on a baking sheet.

Cover and let rise for another 30 minutes. Preheat oven to 375°F (190°C).

Prepare for baking by whisking an egg and brushing it over the buns. Sprinkle with seeds if desired.

Bake for 15-20 minutes until golden brown and enjoy warm.