For the poppy seed buns, mix the butter, milk, sugar, flour, egg and dry yeast into a smooth dough. Let the dough rise until it has doubled in volume.
Knead the dough again by hand. Mix the poppy seed mix with 7 tablespoons of milk. Roll out the dough and coat with the poppy seed mixture. Roll into a roll and cut off 3 cm thick pieces.
Place the pieces on a baking tray and press flat. Bake the poppy seed buns at 180 °C top-bottom heat for approx. 20 minutes.