Pre heat a fan forced oven to 170℃
Grease and line cake tin with baking paper
Remove zest from the orange with a peeler, careful to just take the top/ orange part not the pith (white part between the skin and the flesh of the orange).
Once zest is removed set aside and use a knife to remove and discard the pith.
Roughly chop the orange flesh and use a stick blender or food processor to puree both the zest and the orange until smooth.
In a large mixing bowl break three eggs and whisk, then add the sugar and whisk again until well combined. Next add the orange puree and melted butter and whisk again till well combined.
Gradually add the self raising flour and almond flour and continue to mix with the whisk, finally add the poppy seeds and give it a final stir until all ingredients are well combined.
Pour cake batter into cake tin and bake in the oven for 40 minutes or until a toothpick inserted into the middle comes out clean.
Allow the cake to cool in the cake tin for 10 minutes before removing cake to a wire rack to cook completely.