Sift the flour, cocoa, salt, and spice into a large warmed bowl. Rub in the butter and stir in 5 tablespoons of the caster sugar and the orange zest.

Warm the milk, whisk in the remaining tablespoon of sugar and the dried yeast, and leave for 5 minutes until frothy.

Make a well in centre of the dry ingredients, pour in the frothy yeast mixture and the beaten egg. Work the mixture together using a large spatula until it leaves the sides of the bowl and forms a dough.

Turn the dough out onto a lightly floured work surface and knead for 5 - 6 minutes until it has become smooth and elastic. Return the dough to the bowl, cover with some oiled cling film and set to rise in a warm place until doubled in size. This will take around 1 - 1½ hours.

Turn the risen dough out onto a floured work surface and knead 2 - 3 times to knock out the air. Flatten the dough out into a large rectangle, and sprinkle over the chocolate chips, candied citrus peel and the sultanas. Knead 2-3 times more to incorporate the chocolate and fruit into the dough.

Divide the dough into 11 equal pieces and roll into balls. To ensure all the buns are the same size, weigh the finished dough, divide the figure by 11 then cut and weigh each piece of dough before rolling into a ball. The dough will be a little over 1kg (2lb 4oz) making the dough balls approximately 95g (3¼oz) each.

Grease the casserole with some of the extra butter and lightly dust with flour.

Evenly space the dough balls in the casserole, 8 around the outside and 3 in the centre, cover and leave to rise for 1 - 1 ½ hours or until doubled in size. Warming the casserole before putting in the buns to rise and then placing on the lid will provide a perfect environment for the rising process.10-15 minutes towards the end of the rising process preheat the oven to 200°C/ 400°F/ Gas Mark 6. For fan assisted electric ovens you may need to reduce the temperature by 10-20°C.

For the crosses mix the flour, oil and enough of the water together to make a smooth paste. Place the mixture into a plastic piping bag or small plastic bag, snip 4 - 5mm off the corner and pipe a cross on each bun.

Place the casserole into the preheated oven and bake the loaf for 30 - 35 minutes until well risen and lightly browned.

To make the glaze simmer the orange juice and the honey together in a small pan for 3-4 minutes until it has reduced a little and has a sticky texture. Brush the glaze over the hot baked bun loaf and allow to soak in. Serve the bun loaf in the casserole.

Cook's Notes

For better baking results always weigh and measure your ingredients. It is worth while investing in a simple oven thermometer and a good set of measuring spoons.

If you do not have a piping bag you can use a small clear plastic bag with the corner cut off or a triangle of baking paper shaped into a cone.