2. Add the warm milk, egg and butter and mix with until blended with a spoon or stand mixer fitted with a dough hook. If using a stand mixer, mix until the dough becomes smooth and an elastic dough forms, Add a little extra flour if needed so that the dough is less sticky. You want the dough to be pliable and to come away from the walls of the bowl. The dough will still be a little sticky but not enough to stick to your fingers. This will take about 5 minutes on low.