This is a simple cake that's great for beginners to try. Use the whole orange, skin and all, for a moist and delicious result.
180g plus 2 tbsp melted butter
1 cup castor sugar
1½ cups self-raising flour
2½ cups sifted icing sugar
orange zest, to decorate
Preheat oven to 180C. Grease and line the base of a 12cm x 22cm loaf tin.
Cut one orange into large chunks, leaving the skin on. Place in a large food processor and blend until well pureed. Add 180g melted butter, eggs, sugar and flour then process until well combined.
Pour the mixture into the tin and bake for 50 minutes, or until an inserted skewer comes out clean. Remove from oven and allow to cool for five minutes, then turn out of tin and cool on a wire rack.
To make the icing, mix icing sugar with two tablespoons melted butter. Juice remaining orange and add small amount to icing mix to obtain a spreadable consistency. Ice the cooled cake and decorate with orange zest.