1. Mix the milk, yeast and a teaspoon of sugar, add the flour and add the egg, oil, melted butter, salt and the rest of the sugar. Form a dough and let rise to double for 1 hour.
2. Divide the dough into 15 pieces, roll each out and grease the inside with butter, roll out again.
3. Put all the buns on a baking sheet, leave to rise for 30 minutes
4. Brush with egg and bake at 160C/320F for 20 minutes
