Step 1

Place oranges in saucepan and boil for two hours, topping up water as necessary.

Step 2

Allow to cool, then cut into pieces, place in a blender and blend until smooth (pips and peel can be included).

Step 3

Preheat oven to 200C and line a 20cm round cake tin.

Step 4

Beat eggs and sugar together.

Step 5

Mix in baking powder, stir in the pureed oranges and gently fold in almond meal.

Step 6

Mix in orange liqueur if using, then pour mixture into tin.

Step 7

Bake for 55 minutes, or until knife inserted in centre comes out clean. Allow cake to cool in pan before removing.

Step 8

Dust with icing sugar prior to serving.