Abstract: An encrusted food product, such as a pizza roll, is prepared by co-extruding a cavity-forming sealant material, such as cheese, with a bread or pastry dough whereby the cavity-forming sealant material is encapsulated in the dough, subjecting the co-extruded article to a preliminary baking whereby the cavity-forming sealant material melts and generates gases. The molten material coats the interior of the encapsulating dough and the generated gases cause expansion of the space occupied originally by the cavity-forming sealant material thus creating a cavity or void within the dough. After preliminary baking the dough with its interior void lined and sealed with molten material is chilled to set the molten material. Thereafter the void or cavity of the dough so prepared can be filled with any desired filling and baking can be completed.