We observe that the further restriction of OT-FKM isoparametric hypersurfaces in spheres naturally gives isoparametric hypersurfaces in products of spheres. Based on this geometric construction, we find infinitely many area-minimizing subvarieties of the Simons cones. We also discuss the significance of area-minimizing cones of codimension (<=2) in regularity theory for the Plateau problem.