Hi there, KCD! A 9" x 13" cake will bake for about 45 to 48 minutes at 325°F. If you make a full batch of the frosting you'll end up with extra, so you may want to consider making 3/4 of a batch to generously frost the cake (with a 3/8” thick layer of frosting) or a half batch for a thinner layer of frosting (a scant 1/4”). Happy baking! Morgan@KAF
February 20, 2019 at 4:33pm
In reply to What is the baking time for a 9 x 11 sheet pan? Pot lucks are… by KCD (not verified)