Preheat oven to 350 degrees. Lightly grease an 8 inch round pan with butter or coconut oil. Make sure to cover up the sides. Sprinkle 2 tablespoons of the sugar into the bottom of the pan.
Beat together eggs yolks, 1/4 cup sugar, and the vanilla, until smooth.
Using a stand mixer, whip the egg whites until they form soft peaks. Slowly beat in the remaining 1/4 cup sugar. Set aside.
Whisk together the dry ingredients (flours, baking powder and salt), and add to the egg yolks. Stir to form a thick dough.
Fold in the egg whites, 1/2 cup at a time, incorporating them fully between each addition. The final addition should result in a smooth, fluffy batter.
Pour the cake batter into the prepared pan. Bake the cake on the center rack for 30 to 35 minutes, until it's golden brown and a toothpick inserted into the center comes out clean.
Remove the cake from the oven and allow to cool in the pan for 5 minutes. Turn the cake out onto a serving plate.
Allow cake to cool before topping with sliced berries, or fruit of your choice.