Poland's Law and Justice (PiS) party, which ruled for eight years, carried out a deep overhaul of the judiciary which the EU said damaged democratic checks and balances and brought courts under political influence.
As a result, the European Commission held back billions in funds earmarked for Poland.
EU commissioners said the plan by the new pro-EU government, in power since last December, and which involves several bills rolling back PiS reforms, was well received.
"This was very impressive for the Commission to listen to so many positive comments around the table... the reactions are very positive," European Union Justice Commissioner Didier Reynders told reporters.
The deputy head of the European Commission, Vera Jourova, called the action plan "realistic".
Poland's new prime minister, Donald Tusk, has vowed to restore judicial independence and get the funds released. But he faces resistance from PiS supporters and allies, who include President Andrzej Duda and some high-profile judges.
Polish Justice Minister Adam Bodnar said after presenting the plan in Brussels, "I think that the very positive reaction from the member states is also associated with a certain level of trust that we will do it in a way that is predictable and consistent with the rule of law."
Bodnar said earlier the plan includes changes to the National Council of the Judiciary, which appoints judges, and the Constitutional Tribunal, which decides on the constitutionality of laws.
Critics say the Tribunal has been politicised under PiS.
(Reporting by Anna Wlodarczak-Semczuk, Alan Charlish and Pawel Florkiewicz; Editing by Gareth Jones, Alexandra Hudson)
By Anna Wlodarczak-Semczuk
