An oven includes an oven chamber having a cavity at least partially defined by a door, a pair of side walls, and a rear wall; a baffle extending lengthwise between the pair of side walls, the baffle having an arcuate shape along at least a portion of its length; a heating element located between the baffle and the rear wall; and a first tangential fan configured to direct air over the heating element and through the baffle. The distance between the baffle and the rear wall is greater near the sidewalls than at the midpoint between the side walls.