Preheat the oven to 180°C / 350°F / Gas mark 4.
Grease a muffin tray with sunflower oil.
Use a large bowl to combine all of the plain flour, caster sugar, cinnamon, nutmeg and salt.
Make a well in the middle and mix the eggs in using your hands, for 5 minutes.
Add the yeast into the bowl and continue to mix for 5 minutes until everything is incorporated and the dough is smooth.
Gradually mix the butter into the dough, stirring with a wooden spoon as you go, until all of the butter has been added and the dough is elastic.
Weigh the dough into 40g balls.
Add the balls into the muffin tin holes and leave to rise for 25 minutes in a warm place until they double in size.
Bake in the oven for 8 minutes until the buns have puffed up and are golden brown.
Return to the oven for 3-4 minutes if needed.
Serve warm with butter.