Bake at 350 degrees for about 27 - 30 minutes, or until knife inserted into center comes out clean (a sheet cake may take a bit longer). (allysonkramer.com)
Bake the cake for 50 - 60 minutes or until a sharp knife inserted into the center of the cake comes out mostly clean with just a few crumbs on it. (bakingandboys.com)
Bake in a 350 °F oven for 35 - 40 minutes, or until knife inserted into the center comes out clean. (dineanddish.net)