Hollins pumped in four 3-pointers Deande Mathieu supplied 19 points with seven assists for the Golden Gophers (18-11, 7-9 Big Ten), who went 11-of-19 from 3-point range overall.
Andre Hollins added 14 points and Charles Buggs totaled 13 in a reserve role.
The Hawkeyes (19-8, 8-6) dropped a second straight despite 24 points from Roy Devyn Marble.
Aaron White finished with 21.
Interpol investigating stolen passports on missing flight
Dennis Rodman pledges to end trips to North Korea