Whisk in the rest of the milk, the sugar, pumpkin puree and egg (or flax egg).
Meanwhile, preheat the oven to 180°C/350°F/gas mark 4. If you are using the scissors shaping method then use the oiled end of a wooden spoon to make a deep hole in the centre of each bun. Bake the buns for about 20 minutes until golden and they sound hollow when tapped on the bottom.
For the best results make sure that you follow the recipe closely. As always, I highly recommend using the gram measurements (with a digital scale), rather than the cup conversions. Cup measurements are simply not accurate enough for baking and I cannot guarantee the best results if you use them.