Improving box Cake Mixes add eggs replace oil with melted butter, double it. replace water with milk for all cakes: I don't care what the box says, bake at 300 for one hour. For a flat top. Tried these substitutes, I wasn't impressed.
Steak Tips with Peppered Mushroom Sauce ~ GuideKitchen
something easier, dear cake-lovers. Swap all but the cake mix for a bottle of soda. Stir 12 ounces of a carbonated beverage into your prepackaged cake flour, plop the mixture into a pan and bake it in the oven as directed on the box.
For making substitutions when you're missing an ingredient.