Step 1

If you are using fresh oranges, wash them very well, place them in a bowl and cover with boiling water for a few seconds to dewax and sterilise them. Take them out and cut them into medium slices. Place orange slices in a medium pot with 1 cup of water and ½ cup of sugar. Cover with a lid and simmer on a very low heat (I use setting 1 out of for about 1 hour, until orange slices are soft and semi-transparent. Drain orange slices on a few pieces of kitchen towel so that you don't add extra moisture to the brownies.

Step 2

Chop or break up the chocolate into smaller pieces with your hands. Place chocolate in a glass bowl over a water bath (bain-marie). Make sure the bowl doesn't touch the water. Simmer on a very low heat until the chocolate has melted. Add coconut oil and give the mixture a good stir to combine the two. Take the bowl off the pot and allow the chocolate to cool down.

Step 3

Place almond flour, cornflour / cornstarch, buckwheat flour and baking powder in a small bowl. Mix very well.

Step 4

Pre-heat the oven to 180° C / 355° F. Grease a brownie tin (I used a 19 cm / 7.5 " square tin) with a little bit of olive oil.

Step 5

In a clean metal or glass bowl whip aquafaba until you get stiff peaks. It is very important that the bowl has no grease residue as this will prevent the aquafaba from reaching stiff peaks. Once the aquafaba is at the stiff peaks stage (turn the bowl upside down, if aquafaba does not slide down at all, it means that it has reached stiff peaks), start adding sugar very gradually, half a tablespoon at the time, whipping well after each addition.

Step 6

Gradually (and gently so that you don't knock too much air out of the whipped aquafaba) fold flour and baking powder mixture into whipped aquafaba with a spatula or a spoon.

Step 7

Next, incorporate melted chocolate slowly until you achieve an even looking batter.

Step 8

Chop 6 orange slices (drained of excess moisture) finely and gently fold them into the batter.

Step 9

Spoon the batter into the brownie tin. Decorate with orange slices - I used 9 halves, leaving generous gaps between them. Do not cover the entire brownie with orange slices as they will prevent the top from getting crispy. You can also bake the brownies without orange slices (for an even crispier top) and add orange slices afterwards, before cutting the brownies.

Step 10

Bake for 30 (they will be über gooey like in my photo) or 35 mins (they will be a bit firmer but still fudgy). Remove from the oven and let the brownies cool COMPLETELY before cutting into 9 or 16 pieces. These brownies are rather rich so I recommend 16 smaller pieces.