The talented striker struck two impressive goals on the day.
Robinson told chelseafc.com afterwards: "We're pleased with his progression this season.
"He is a shining example that if approach training in the right way, you get your rewards. The pleasing thing is we know there is more to come.
"He is an under-18 player who has been playing Under-21s football for a large part of this season. Still, the goals have come, I think he's on 15 now, and that is promising."
He also said: "We created a lot of good situations and a fair number of chances – and we were pleased with that side of things. But on the other side, there seemed to be lulls after every goal we scored and that allowed them back in the game."