Lawrence Shankland and Thelo Aasgaard both scored from the penalty spot in what was another good test for Derek McInnes’ side ahead of the start of the Scottish Premiership campaign.
Summer signings Ivor Pandur, Ross McCrorie, Ben Godfrey, Dan Neil and Lawrence Shankland all started the match, with Cammy Devlin named on the bench.
Rangers started with Pandur in goal, behind a back four of McCrorie, Godfrey, Emmanuel Fernandez and Tuur Rommens.
In midfield, Neil partnered Tochi Chukwuani with Mohamed Diomande and Findlay Curtis on either side. Last season’s top goalscorer Youssef Chermiti was joined up front by Shankland.
With four minutes played at Ibrox, Rangers were awarded a penalty after Mohamed Diomande was taken down by Kevin Pedro.
Lawrence Shankland stepped-up to the spot, and the striker made no mistake on finishing a low right-footed penalty into the back of the net.
There was almost a second in the 12th minute and it was a lovely attacking move by Rangers. The ball was won back well in midfield after pressure from Tuur Rommens and Tochi Chukwuani before being played out to Chermiti on the left.
The striker raced forward and fed it to Rommens who had continued his run to the byline to play a one-two with Chermiti but the number 9 was denied a goal by the crossbar.
Goalkeeper Ivor Pandur was called into action as Irvin Cardona was through on goal, but the Croatian got a crucial touch to divert it wide before the danger was cleared.
The visitors had a goal back on the 38th minute as Thierno Ballo crossed a ball in from the right, with Jakob Breum Martisen tapping home from close range.
There was one change at half-time for Rangers as Cammy Devlin was introduced for a first appearance in place of Findlay Curtis.
Devlin was lively in midfield, and, not for the first time, won the ball back just inside the visitors half, before Lawrence Shankland tried a spectacular effort as he spotted the goalkeeper off his line but it was just high of the target.
Dan Neil came close too with a right-footed strike over the bar, before Pandur held a powerful shot from Mehdy Lutin.
With 83 minutes played, Rangers were awarded a second penalty of the game after Bojan Miovski was taken down inside the box by the goalkeeper. This time it was Thelo Aagaard who stood over the set piece, and it was a confident penalty from the Norway international in his first appearance since the World Cup as he sent it into the back of the net.
Rangers: Pandur, McCrorie (Nsio, 73), Godfrey, Fernandez, Rommens, Neil (Cameron, 85), Chukwuani (Aasgaard, 60) Diomande, Curtis (Devlin, 46) , Chermiti (Naderi, 60), Shankland (Miovski, 73).
Subs: Kelly, McGuire, Bajrami, Antman, Nsiala, Sterling, Gassama, Hutton, McCausland.
AS Saint-Étienne: Larsonneur, Ferreira (Stojkovic, 69), Le Cardinal (Depalle, 72), Nair (Kasia, 46), Pedro (Reynaud, 72), Bernauer (Teillol, 72), Csongvai (Mouton, 72), Martisen, Ballo (Baallal, 46), Duffus (Moulin, 72), Cardona (Lutin, 72).
Subs: Gadegbeku, Toty, Colombet.