In an apparatus for heating and/or cooking foodstuffs, in particular meat products, comprising an appliance housing with at least one opening, an accommodating device for the meat products to be heated, a heating device associated with the accommodating device and having one or more heating elements, the accommodating device has one or more accommodating compartments which is accessible by way of the opening, and an insertion cassette which corresponds to a respective accommodating compartment and which can be loaded with one or more meat products in a predetermined orientation relative to each other and is adapted to be introduced into and removed again from the accommodating compartment.