If we had to guess, we’d say that the 9×13-inch pan is the piece of bakeware most people have in their kitchens. Yes, there are probably some out there who prefer an 8×8-inch pan, but the 9×13 still reigns supreme — and for good reason.
It comes standard in a variety of materials (metal, glass, and ceramic), which means it really is perfect for every dish and cooking style.
Jonathan Wilhoite Blog 
