Browning finished the day 23 of 28 for 294 yards with five touchdowns and no interceptions while tailback Myles Gaskin chipped in with 67 yards and a score on 12 carries.
Washington got out to a quick lead after Husky safety Budda Baker forced a fumble on the opening kickoff as Browning found wideout Dante Pettis in the endzone for a 21-yard touchdown on their first offensive play.
Idaho's defense stifled the Washington offense for the remainder of the half and looked poised to tie things up but wideout Trent Cowan fumbled when he was hit hard by Husky safety Jojo McIntosh and linebacker Azeem Victor was there to recover the ball at the one yard line.
After trading punts and switching sides of the field at the end of the first quarter, that's when things began to click for the Husky offense as they scored 28 points, the fourth-most in school history during a second quarter, with Browning finding Pettis for another touchdown, this one from seven yards out, finding Chico McClatcher for a 30-yard touchdown and John Ross III for a nine yard score.
Gaskin also added his first touchdown of the season during the quarter, sending the teams into the locker room with the Huskies leading 35-0 at the half.
Ross finished the day with a team-leading seven receptions and totaled 67 yards and a two touchdowns while Pettis led the team with 88 yards receiving and two touchdowns on six receptions and McClatcher wound up with three receptions for 76 yards and one score.
Defensively, the Huskies allowed just 87 yards in the first half and Baker finished tied for the team lead with six tackles, along with Victor, to go along with half a sack, 1.5 tackles-for-loss and the forced fumble.
Washington, now 2-0 on the season, will play host to Portland State this coming Saturday before beginning Pac 12 play in two weeks with their game against Arizona in Tucson.