This is Wilton's recipe for yellow cake that can be stacked.
"Use this simple recipe to create a Basic Yellow Cake. This cake can be used in any cake, cupcake, loaf, or specialty pan. It provides a nice canvas for decorating and can be filled with your favorite filling."
I often use this recipe for as a neutral cake that I drizzle juice over then layer with fruit or as a canvas for flavored fillings before decorating. Makes a good base for super sweet icings and fondant cakes.
I add at least one extra egg if I will be making a stacked, wedding style cake for extra firmness to guarantee it doesn't fall when adding heavy fondant covering. Trust me that even though the cake may seem dense and firm, once stacked and towering it WILL fall apart without extra eggs.