For the cinnamon swirl Bundt cake, use a 10-cup bundt pan; for the layer cake, use two 9-inch rounds. In a medium bowl, whisk together flour, baking powder, baking soda and salt. In a large bowl ...
And no, it doesn't involve any convoluted origami. A standard parchment roll is 15 inches wide, so, for a two-layer cake, our first instinct might be to pull out a 16-inch sheet, fold it in half ...