We investigate minimal left ideals in Steinberg algebras associated with Hausdorff groupoids. Our study reveals a connection between these minimal left ideals and open singletons in the groupoid's unit space. Utilizing this relationship, we derive results concerning the socle of Steinberg algebras under specific conditions. This work extends existing findings on Leavitt path algebras and enhances Kumjian-Pask algebra results to encompass higher-rank graphs that are not row-finite.
