Ruth M. Siems, Inventor of Stuffing, Dies at 74 - New York Times:

Ruth M. Siems, a retired home economist whose
best-known innovation will make its appearance, welcome or otherwise,
in millions of homes tomorrow, died on Nov. 13 at her home in Newburgh,
Ind. Ms. Siems, an inventor of Stove Top stuffing, was 74.

I had never thought of stuffing as having been invented by a single
person, let alone someone who was still alive until this month.