From Gluten Free Holiday Baking from the November/December 2010 edition.
2 oranges
4 eggs
2 c brown sugar
2 c almond flour
1 c brown rice flour
½ t salt
1 t baking soda
Preheat oven to 375ºF.
Wash the oranges and boil them whole for 1½ hours. Place the oranges in a food processor and process till smooth. Add rest of ingredients and process till well blended.
Pour batter into a greased 9″ round pan. Bake for 40-45 minutes. Let cool in pan for 2 hours.