The safest way to microwave any food is in a glass or microwave-safe bowl. Never use a wood bowl. Why? Wood heats differently in the microwave because it is porous so it can absorb moisture from food. it will also be very hot to the touch when trying to remove it. If you try to nuke dry food, like nachos, the bowl may char and smoke because dry food is a poor absorber of microwave energy. It may even warp the bowl!