Abstract: Apparatus for cooking a food product, for example a hamburger, comprises a mould assembly for cooking the hamburger. The mould assembly is formed from first and second moulds (3,3') formed on upper and lower bodies (1,2). Each mould is formed with a pair of radially opposed arcuate side wall portions (5,6). The side wall portions (5, 6) on respective moulds (3,3') are so located and dimensioned that when they are brought together they define a substantially continuous side wall. When the moulds are moved apart spaces between the side wall portions allow the hamburger to be easily removed.