Potato starch based trays can be foamed with a relatively high content of corn fibers. Corn fiber is not a reinforcing fiber for starch-based foam trays. The tensile strength and flexibility of the trays decrease with increasing fiber content. The addition of PVA to the formulations mitigates the reduction in tensile properties seen when corn fiber was added alone. Increasing the fibers content increases batter viscosity, thus increasing baking time. The fiber also interferes with foaming so additional batter volume is needed as corn fiber increases to form complete trays. PVA can be added to the formulation as a dry powder, avoiding the time and energy consuming step of dissolution. The addition of corn fibers and PVA together decreases the water absorption in the foam. The largest decrease in water absorption was seen with the addition of high molecular weight PVA. Corn fiber along with the addition of PVA to potato starch is a viable option to improve moisture resistance of foamed trays. Trays containing 28.5% corn fiber and PVA-PH had tensile properties that were the same as trays containing only starch, but with better water resistance. For corn fiber to have a greater impact on starch foam trays, the aspect ratio of the fiber needs to be changed so the fiber will have more reinforcing properties.