Goals from Findlay Curtis, Blaine McClure and Zak Lovelace delivered all three points for the Light Blues who recorded a second successive derby triumph in the competition inside the space of a month.
Speaking to RangersTV after the win, Thomson was delighted with the attitude of his players: “It was probably similar to Celtic in that our preparation wasn’t great during the week due to the weather.
“But I think what is good for the boys is that they’ve come off the back of beating Celtic in the Glasgow Cup and to go back out and get another result is good.
“It wasn’t our best display of football, but they got the job done and every one of them contributed to the team.
“When we set the team up there are players who can certainly change a game.
“The goals that we scored, and the timing of the third goal that we scored through Zak, was brilliant. Zak’s always going to be a threat; he has that in his locker with his sheer pace and power.
“I’m really pleased in the way that the guys approached the game considering the fact our preparation was mainly in indoors, but the boys went out and played for each other which was massive.”
It was only three weeks ago that a much-changed Rangers side delivered a priceless Old Firm victory in the final of last season’s competition at The city Stadium.
Winning breeds confidence, believes Thomson, and he says it’s important that his young players understand the importance of maintaining standards in these fixtures.
He added: “There is a maturity in the players now.
“At the start of the season we completed pre-season and everyone was finding their feet, but what we saw today was some really solid performances in terms of that maturity and handling the fact that Celtic, especially in the second half, were playing some good football against us.
“We were always in control of defending those chances that they created.
“We’re well aware of what it takes to be a Rangers player and you need to have that winning mentality.
“But you need to get the wins and those wins give you the confidence and the belief that you’re part of a winning side that can handle the pressure placed on you.”