The 8" cake pans with straight edges are from Williams-Sonoma. I made one cake recipe, then repeated, making another half recipe to fill the third pan. The recipe below is only one full recipe, you'll have to do the math { pretty simple } to make the next half a recipe for the third cake layer. I just mixed the batter while the first two were baking. In all probability, you could mix a full 1 1/2 recipes at once, but I wasn't taking any chances. This recipe is adapted from a Martha Stewart and a Bakers Royal recipe. Inspiration came from Call Me Cupcake.