This recipe seems great, but I think your suppose to start by beatting the two sticks of butter until smooth, add sugar, mix until incorporated. Add egg yolks one at a time and finally add flour alternating with milk and flavorings. In a separate bowl beat egg whites until peaks form. Incorporate to batter by hand in a folding method.
Nellybetsy, that is the order I use too.
Nellybetsy your correct I don't know why I wrote this receipe in that order