Method for defrosting, 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 ramp (5) disposed above said support (8) comprising a plurality of infrared emitters (7), and at least one electric heating element (6) arranged below said support (8). ), which device is connected to a single-phase electrical installation, and in which process: (a) said support (8) is heated by means of said at least one electric heating element (6) until a set temperature is reached and maintains said set temperature； (b) supplying a food product on said support (8) in said at least one heating chamber (2)； (c) simultaneously, the power supply of said at least one electric heating element (6) is cut off and the supply of said at least one ramp (5) is activated； (d) the food product supplied in said at least one heating chamber (2) is thawed, heated and / or cooked for a period of time of less than 3 minutes, preferably less than 2 minutes, more preferably less than 1 ,5 minutes ； (e) the food product is defrosted, reheated and / or cooked. 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 m
