Choc chip and orange loaf

Preheat the oven to 180°C (350°F, gas mark 4).

Place the butter or margarine, sugar and flour in a large bowl. Add the baking powder, the grated rind and eggs. Whisk with an electric mixer until smooth. Fold in the chocolate chips.

Spoon into a greased and lined 900g (2lb) loaf tin. Bake for 45-55 mins until risen and golden, and when a skewer inserted into the cake comes out clean. Cool in the tin for 10 mins, then turn out on to a cooling rack.

Beat 75g (3oz) softened butter with 10ml (2tsp) finely grated orange rind. Gradually beat in 175g (6oz) sifted icing sugar and 15ml (1tbsp) orange juice to make a smooth buttercream, then spread over the cake when cold.