Recoverable and recyclable heterogeneous grafted Fe-APA complex efficiently catalyzed the one-pot synthesis of octahydroquinazolinone derivatives via multicomponent reaction of dimedone, aromatic aldehyde, and urea using methanol as a solvent. The desired products were obtained with 84–96 % yields. The present approach offers several significants such as short reaction time, high yield, easy purification, minimum catalyst loading, and use as an alternative catalyst. Grafted Fe APA complex were synthesized and characterized by various analytical investigative techniques like FTIR, NMR, Mass, XRD, SEM, EDAX, TEM with SAED, and BET surface area.