Method of thawing, reheating and/or cooking a food product, in particular a frozen food dough, in a device (1) comprising at least one heating chamber (2) provided with at least one support (8), at least one strip (5) arranged above said support (8) comprising a plurality of infrared emitters (7), and at least one electrical heating element (6), arranged below said support (8), which device is connected to a single-phase electrical installation and in which method: (a) said support (8) is heated by means of said electrical heating element (6) until attaining a set temperature and the set temperature is maintained； (b) a food product is supplied onto said support (8) in said at least one heating chamber (2)； (c) simultaneously, the electrical supply of said at least one electrical heating element (6) is cut and the supply to said at least one strip (5) is activated； (d) the supplied food product is thawed, reheated and/or cooked in said at least one heating chamber (2) for a period of time less than 3 minutes, preferably less than 2 minutes, more preferably less than 1.5 minutes； (e) the thawed, reheated and/or cooked food product is removed from the device.Procédé de décongélation, réchauffage et/ou cuisson d'un produit alimentaire, notamment d'une pâte alimentaire surgelée, dans un dispositif (1) comprenant au moins une enceinte de chauffage (2) pourvue d'au moins un support (8), d'au moins une rampe (5) disposée au-dessus dudit support (8) comportant une pluralité d'émetteurs infrarouge (7), et d'au moins un élément électrique chauffant (6), disposé au-dessous dudit support (8), lequel dispositif est connecté à une installation électrique en monophasé, et dans lequel procédé : (a) on chauffe ledit support (8) au moyen dudit au moins un élément électrique chauffant (6) jusqu'à atteindre une température de consigne et on maintient ladite température de consigne； (b) on approvisionne un produit alimentaire sur ledit support (8) dans ladite au moins une enceinte de ch
