Set the oven to 160 C / 320 F
Line a round 24 cm /10 in tin with a removable bottom.
Put the sugar and eggs in to a stand mixer and beat while you prepare the other ingredients.
Melt the butter and chocolate in a bowl in the microwave for 1 minute or over a double boiler. Set aside to cool slightly
Mix the almond meal and cocoa getting rid of any lumps.
When the eggs and sugar look thick and doubled in volume, stop the mixer and add the chocolate butter mixture and almond cocoa mixture and beat together till combined.
Pour this into the cake tin and level off. It is a thick mixture and will need a spatula
Bake for approximately 30 minutes depending on your oven. Test with a skewer at 30 minutes. The skewer should come out with a little bit of damp chocolate ( better under done). If it needs a little more time allow 5-10 minutes.
Makes approximately 9 slices