The present invention is concerned with a frozen baked foodstuff other than a frozen baked bagel that can suitably be prepared for consumption by microwave heating, said foodstuff comprising a filling and a flour based casing that fully envelops the filling. More particularly, the invention relates to such a foodstuff that comprises a toroidal shaped filling and a flour based casing that fully envelops said toroidal shaped filling, wherein the ratio between the internal diameter and the external diameter of the toroidal shaped filling is within range of 1 :3 and 1 : 1.3. The invention also relates to a method of preparing a ready-to-eat foodstuff comprising subjecting the aforementioned frozen baked foodstuff to microwave heating and to a process of preparing said frozen baked foodstuff.