Polenta Cake

Yield:	6 Servings
Categories:	Italian, Desserts

1/2	c	Sugar
1/4	ts	Sugar
1		Stick butter; softened, unsalted
2		Egg yolks; room temp
1	ts	Orange zest; finely grated
1/2	ts	Lemon zest; finely grated
1/2		Vanilla beans, or 1 tsp van extract
2/3	c	Natural almonds
1/2	c	Yellow cornmeal, or course polenta
1/4	c	Cornstarch (yes 1/4 cup!)
1/2	ts	Baking powder
4		Egg whites; room temp
2	ts	Confectioner's sugar
		Sweetened whipped cream