Heat the oven to 180C/160C fan/gas 4 and line a 12-hole muffin tray with paper muffin cases.

Melt the butter in the microwave or a small pan over a low heat, then set aside to cool for 10 mins. Meanwhile, mix the flour, bicarb, sugar, cinnamon and nutmeg in a large bowl with a pinch of salt.

Add the yogurt, vanilla and eggs to the cooled butter and mix well. Pour the wet ingredients into the dry ingredients along with the orange zest, chocolate and dried cranberries. Mix well until there are no pockets of flour.

Divide the mixture evenly between the paper cases, then bake for 30 mins until risen and golden. Check they’re cooked by inserting a cocktail stick into the centre of one of the muffins (choose one in the centre of the tray). If any wet cake batter clings to the skewer, return to the oven for 5 mins.

Remove the muffins from the oven and leave to cool in the tin for at least 10 mins. Meanwhile, mix the icing sugar with enough of the orange juice to make a loose icing. Brush the orange glaze over each muffin, then sprinkle with a little pearl sugar, if using. Leave to cool before eating. Will keep in an airtight container for up to five days, or frozen for up to two months.