Houllier said: "We all gave Milan a round of applause when he returned to training because it is special to score a goal for your country. Didi Hamann scored as well for Germany.
"Milan is totally back now. He started well when he returned from injury then he had a bit of a dip but now he is back to his top level again."
With Michael Owen's fitness still in doubt Baros looks set to star against Blackburn on Sunday.