Step 1

In a medium saucepan, place oranges and add enough water to submerge the oranges. Cover saucepan with a lid and bring to a boil.

Step 2

Once the water boils, lower the heat and keep simmering for 2 hours.

Step 3

Drain oranges.

Step 4

Preheat oven to 180°C (350°F).

Step 5

Grease and dust an 8-inch baking pan with flour.

Step 6

Slice the oranges into quarters and remove the bitter part in the middle, as well as the main eye in the middle.

Step 7

Place the sliced oranges in a food processor and pulse until you get a smooth puree.

Step 8

Add almond meal and sugar. Mix until thoroughly combined.

Step 9

Add eggs and baking powder. Mix until you get a smooth cake mixture.

Step 10

Pour cake mixture into greased and floured baking pan.

Step 11

Use a spatula to even out the top of the cake mixture.

Step 12

Sprinkle sliced almonds on top of the mixture.

Step 13

Place baking pan in the lower part of the oven for 55 to 6 minutes.

Step 14

Set aside for at least 30 minutes, to cool down and then remove the cake from the pan.

Step 15

Serve. (Dust with some powdered sugar or more sliced almonds, if desired.)