Cinnamon Poppy Seed Cake

Yield:	12 Servings
Categories:	Cakes, Cookies

2	c	Sugar
1	tb	Ground cinnamon
2 1/2	c	All-purpose flour
2	ts	Baking powder
1	ts	Baking soda
1/2	ts	Salt
1	c	Unsalted butter; room temperature
2	ts	Vanilla extract
4	lg	Eggs; separated
1	c	Buttermilk
6	tb	Poppy seeds