Acquired palatal defects may arise from trauma, infection, pathology, radiation therapy, or surgical resection, resulting in oro-nasal communication that adversely affects speech, swallowing, mastication, and patient morale. Obturator prostheses are commonly used to restore these functions; however, in extensive maxillectomy defects, increased prosthesis weight and the absence of adequate retentive undercuts may compromise retention, stability, and patient comfort. Hollowing of the obturator is an effective method for reducing prosthesis weight and improving function. This clinical report describes the rehabilitation of a patient with a total maxillectomy defect secondary to COVID-19-associated mucormycosis using a simplified reverse hollowing technique for fabrication of a definitive obturator. Reverse hollowing was performed from the palatal aspect following conventional processing, and an acrylic shim was incorporated to re-establish palatal contour, thereby improving speech resonance and swallowing efficiency. A heat-cured resilient liner (Molloplast B) was used to engage soft-tissue undercuts and enhance retention. The described technique is simple, efficient, economical, and reproducible, and may be particularly useful in extensive defects where conventional hollowing procedures are difficult to perform.