1. Slice the hot cross buns in half, melt the butter and spread on one side of the bun. 2. Add the sugar, eggs and milk, along with the zest & juice of 3 oranges and whisk together. 3. In an oven proof dish layer the hot cross buns and chocolate callets. 4. Pour the egg mix over the buns and bake for 45 to 50 minutes on 140°c 5. Make the custard as per pack instructions and mix through 80g of marmalade. 6. Take out of oven when the buns have reached a crore temperature of 75°c then warm 20g marmalade and glaze the top. 7. Serve with a dusting of icing sugar and custard.