Preheat oven to 350'. Grease two round cake pans. Line bottoms of pans with parchment paper. Grease the paper.
In large mixing bowl beat eggs and sugar with an electric mixer about 5 minutes until pale and thick ribbons form.
In another bowl whisk together dry ingredients. In a medium bowl combine remaining ingredients except vanilla. Beat vanilla into beaten egg on low speed.
With mixer on low speed, add the dry and wet ingredients in three additions starting with dry and ending with wet. Turn mixer off and whisk until combined. Pour into prepared pans.
Bake for 25-30 minutes until toothpick comes out clean. Cool 10 minutes in pan then remove and cool completely. Frost with lemon buttercream frosting.