The manual reservation process for the catering services of Auxiliary Services Program at Nueva Vizcaya State University presents several challenges. It depends heavily on manual procedures such as paper-based forms, personal communication, and multiple layers of verification and approval. To address these issues, the researchers developed an Online Catering Reservation Management System using the Rapid Application Development (RAD) model, which supports iterative design, rapid prototyping, and continuous user feedback. The study is significant for the clients which are the students, employees, and guests, the ASP staff and Catering Industry, the future researchers, and the researchers. Data collection involved interviews with the ASP Director, surveys of 52 students, 93 employees, 22 guests, and on-site observations. The system integrates essential features such as menu browsing, reservation submission, scheduling, approval tracking, email and SMS notifications, cancellation request and approval, admin dashboard for monitoring sales, clients, and reservation. The system’s limitations include requiring clients to still visit the university for payment. To assess the system’s quality and performance, the researchers employed the USE (Usability, Satisfaction and Ease of Use) Tool Questionnaire, gathering evaluations from a diverse set of respondents including students, employees, guests, IT professionals, the Food Catering Supervisor, and the Director of ASP. The overall average mean of 6.67 demonstrated consistently high ratings in usefulness, ease of use, and overall satisfaction, indicating strong reliability and user acceptance.