Buttercream frosting really sets the tone for a good cake, and it's the vanilla you use that'll make or break your buttercream. From imitation or pure vanilla extract to beans, paste, and more ...
Stir in milk and vanilla. Add eggs and lightly beat with a spoon or whisk in the center of the batter, then incorporate them into the rest of the batter by stirring well. Add the cake mix and stir ...