The present invention relates to an apparatus for preparing food by moving a flow of hot air over items of food to heat the food. An apparatus for preparing food according to the invention includes a food preparation chamber (3) with an outer wall (2), an inner wall (4) defining a food receiving space (5) with an air inlet (9) and an air discharge opening (10). The apparatus also includes a fan (12) for moving a flow of hot air successively through the air inlet (9), the food receiving space (5) and the discharge opening (10) and air guide means (6) for returning the flow of air from the discharge opening (10) towards the air inlet (9) separate from the food receiving space (5). A vent (18) is provided which is formed through the outer wall (2) for exhausting air from the food preparation chamber (3) to outside the apparatus and an air guide member (22) directs a portion of the flow of air towards the vent (18).