Ingredients to make a small chocolate cake:
3 tablespoons or 1 oz fine cornmeal
3 tablespoons or 1 oz rice flour
3 tablespoons or 1 oz tapioca flour
1 tablespoon or 1/3 oz sticky rice flour
1 medium banana
1 oz fat or oil of your choice
1 tablespoon or 1 oz honey
1 tablespoon cocoa powder
Mix all the above ingredients together - I use a food mixer.
If you use large eggs you should not need to add any water. With small eggs you could add a tablespoon of water but no more.
Leave the mixed batter to stand for 15 to 30 minutes, then beat in 1/2 teaspoon of gluten-free raising agent. I just use bicarbonate of soda.
Use a greased baking tin that gives room for the cake to rise - about half full is about right. Don't use too hot an oven for gluten-free chocolate cake. It burns rather easily.
...The shape of the cake in this picture comes from the method I use to cook them.