Preheat the oven to 350°F (175°C).

Boil the oranges in water for about 2 hours until soft.

Puree the boiled oranges in a food processor.

In a mixing bowl, whisk together the eggs and sugar until fluffy.

Add the orange puree, baking powder, and almond meal to the egg mixture and mix well.

Pour the batter into a greased cake pan.

Bake for 45 minutes or until a toothpick comes out clean.

Let the cake cool before serving.