US Patent 7435437 Production of foodstuffs with a filling

A frozen foodstuff is made by first molding a foodstuff blank while frozen under pressure into a first foodstuff part that has a cavity intended to hold a filling. Then filling is loaded into the cavity of the first foodstuff part while frozen. Finally a second frozen foodstuff part is fitted to the first foodstuff part to close the cavity. The mating edges of the parts can be coated with water and/or egg white to stick together, and the two parts can then be breaded or otherwise coated.