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 ...

Coat three 9-inch ... to 3/4-inch hole in corner. Leave remaining icing in bowl. Trim cakes flat using a cake leveler or serrated knife, if necessary; discard parchment. Place one cake layer ...