The present document describes a process for the preparation of a protein- fortified frozen dessert formulation, which comprises the steps of mixing a first mix comprising water and a source of fat; mixing in the first mix a stabilizing agent, a sweetening agent, a first protein mix, to obtain a second mix, pasteurizing the second mix, cooling the second mix to produce a cooled second mix, adding a second protein mix into the cooled second mix, before, after, or before and after step cooling the second mix; ageing the cooled second mix to produce an aged mix; and freezing the aged mix to prepare the protein- fortified frozen dessert formulation.