The invention seeks to enable a heater or equivalent type food product to be eaten while hot and held in the hand, while retaining the heating qualities of the ingredients after heating. To do this, the invention proposes making a food product in application of the following steps: preparing uncooked dough (1) of the pizza or equivalent type, spreading it as a substantially rectangular basic slice that is twice the size of the product to be obtained; placing the various selected ingredients (7a, 7b) on the uncooked dough; cooking the dough with its ingredients in a pizza oven, on the floor and at the ambient temperature of said oven; on leaving the oven, folding the cooked and filled dough in half about a middle fold line forming a connecting spine (2) of continuous dough between two facing main faces (3a, 3b) that are substantially plane, with edges (3) of the faces being brought into alignment to define a side edge face (5) opposite from the connecting spine (2), and two end edge faces (6a, 6b), in a slice corresponding to the slice of the product that is to be obtained, and covering the side edge face and optionally no more than one of the end edge faces in an edible seam (4) for joining the edges together.