UDP-glucose-dependent glucosyltransferase catalyzing the c-glucosylation of 2-hydroxyflavanones. a 3'-hydro-2'-hydroxy-beta-oxodihydrochalcone + UDP-alpha-D-glucose = a 3'-(beta-D-glucopyranosyl)-2'-hydroxy-beta-oxodihydrochalcone + H(+) + UDP Belongs to the UDP-glycosyltransferase family.