The present invention provides a cooking apparatus that includes a bottom portion for containing a heat source. The bottom has walls defining an upward-facing opening for supporting a food-supporting surface. A top is movable between an open position allowing access to the food-supporting surface and a closed position cooperating with the bottom to define an interior volume. The top includes an inner heat-retaining layer and an outer layer spaced-apart from the inner layer. The outer layer of the top has apertures formed therein for allowing a convection flow of heat-dissipating air between the outer and inner layers of the top to cool the outer layer.