Raspberry Lemon Cake

cake layers
Preheat your oven to 350F and butter and flour 2 non-stick 8 inch cake pans. I like to put a round of parchment paper on the bottom of the pans just to insure a good release.
Cream the butter, sugar, and lemon zest together until light and fluffy, scraping down the sides of the bowl as necessary.
Beat in the egg yolks, one at a time, along with the vanilla.
In a separate bowl beat the egg whites until soft peaks form. Set aside.
In another separate bowl, whisk together the flour, baking powder, salt, and baking soda.
Add the dry ingredients to the butter mixture alternately with the yogurt and mix until well combined. Scrape down the bowl.
Fold in the whipped egg whites, working gently until no white streaks remain.
Fold in the berries.