Grybukai (mushroom buns)

Instructions

1. Dissolve the yeast in the warm milk, then mix with the flour, egg and melted butter. Knead for 8 minutes until you have a soft dough.
2. Leave the covered dough to rise in a warm place for 1 hour, until it has doubled in size.
3. Meanwhile, finely slice the mushrooms and onion. Cook them in butter over medium heat for 15 minutes, until all the liquid has evaporated.
4. Season with salt, pepper and dill, then leave the filling to cool.
5. Divide the dough into 8 portions, flatten each into a disc and place a spoonful of filling in the centre.
6. Pinch the edges closed, then place the buns on a tray, seam side down.
7. Leave to rise for 20 minutes, brush with beaten egg yolk and bake at 190 °C for 18 to 20 minutes, until well browned.