01 -
Preheat the oven to 180C/350F. Grease an 8-inch cake pan and set aside.
02 -
In a large mixing bowl, beat the egg yolks and sugar until thick and creamy. Mix in the almond flour and lemon zest until incorporated.
03 -
In a separate bowl, beat the egg whites until stiff peaks form.
04 -
Fold the egg whites into the yolk mixture until just combined. Transfer the mixture into the greased cake pan and top with sliced almonds.
05 -
Bake the cake for 30 minutes or until tender on top. Remove the cake from the oven and let it cool for 15 minutes before transferring to a plate. Sprinkle with powdered sugar if desired.