Boil the 2 whole oranges in a pot of water for 1 hour (peel and all) to remove bitterness and soften the fiber-rich peel.
Transfer the boiled oranges directly to a blender and blend until completely smooth.
Add the 6 eggs, 2 cups of almond flour, ½ cup of honey, and 1 teaspoon of baking powder into the blender with the orange puree, and blend until fully combined into a smooth batter.
Pour the batter into a prepared cake pan.
Bake at 350°F (approx. 175°C) for 1 hour until golden and set.
Let cool, slice, and enjoy!
