A device for heating filled brioches, especially with a frozen dough filling, which includes: - an upper subassembly and a lower subassembly that carries out the function of a base and which are hinged to one another; - two or more heating plates, in thermal contact with a heat transfer plate having a heating thermal resistor attached thereto, one or more of said heating plates being installed in the upper subassembly and the other one or more heating plates being installed in the lower subassembly, arranged in an operative position overlapping one another; - loaded elastic elements that press said heating transfer plate against said heating plates; and - at least one thermostat configured to adjust the temperature of said heating plates characterized in that - each of said heating plates is linked to the upper or the lower subassembly wherein it is installed by means of at least one fastening element that allows for some shifting of the heating plate relative to the respective subassembly (3, 4), allowing separating and removing the heating plate from the subassembly (3, 4); - each of said heating plates is provided with a semi spherical cavity for receiving the product; - said heat transfer plate and heating thermal resistor are housed in an enclosure supported in the respective upper or lower subassembly and loaded by said elastic elements, which press said enclosure against the corresponding heating plate, ensuring, through an opening of said enclosure, an optimal contact of the heat transfer plate with the heating plate, and there existing guide columns configured to allow a guided shifting of the enclosure along a shifting stroke, and - said heat transfer plate, housed inside an enclosure, is surrounded by a thermoinsulating layer, except for an open area, in correspondence to said opening of the enclosure, for abutment of the heat transfer plate with the heating plate (14, 14a). - an upper subassembly and a lower subassembly that carries out the function of a base and which are hinged to one another; - two or more heating plates, in thermal contact with a heat transfer plate having a heating thermal resistor attached thereto, one or more of said heating plates being installed in the upper subassembly and the other one or more heating plates being installed in the lower subassembly, arranged in an operative position overlapping one another; - loaded elastic elements that press said heating transfer plate against said heating plates; and - at least one thermostat configured to adjust the temperature of said heating plates characterized in that - each of said heating plates is linked to the upper or the lower subassembly wherein it is installed by means of at least one fastening element that allows for some shifting of the heating plate relative to the respective subassembly (3, 4), allowing separating and removing the heating plate from the subassembly (3, 4); - each of said heating plates is provided with a semi spherical cavity for receiving the product; - said heat transfer plate and heating thermal resistor are housed in an enclosure supported in the respective upper or lower subassembly and loaded by said elastic elements, which press said enclosure against the corresponding heating plate, ensuring, through an opening of said enclosure, an optimal contact of the heat transfer plate with the heating plate, and there existing guide columns configured to allow a guided shifting of the enclosure along a shifting stroke, and - said heat transfer plate, housed inside an enclosure, is surrounded by a thermoinsulating layer, except for an open area, in correspondence to said opening of the enclosure, for abutment of the heat transfer plate with the heating plate (14, 14a).