Then blend on higher speed and beat until fluffy, 2 – 3 minutes, scraping bowl several times.
Bake at 350° for 38 – 60 minutes (very much depends on the pan sizes), or until toothpick inserted in center comes out clean, depending on your oven and pan size.
Frost layers. Or, if baking ahead, wrap tightly in plastic wrap and freeze.
When ready to frost the cake after it's been frozen, spread a thin crumb coat of frosting on the frozen layers. When that has dried, finish frosting and assembling the cake.
It's easier to frost cake when it's frozen, and if you're making a big special-occasion cake, you'll likely have to freeze the layers as you bake them because it will take you several days. If you wrap the unfrosted layers well in several layers of plastic wrap, place them inside a zip-lock bag, and freeze, the cake will still taste great.