Randal Kolo Muani handed the host side the advantage in the first half, with a moment of individual brilliance from Dembele rounding off a dominant display in Lyon. 

France's much-changed side struggled in the opening exchanges, as Dodi Lukebakio and Kevin De Bruyne fired the early warning signs to the host. 

But Les Bleus' slow start improved and they took the lead in the 29th minute after Dembele's scuffed effort was parried into the path of Kolo Muani to smash home, despite the best efforts of Wout Faes on the line. 

From then on, Domenico Tedesco's side failed to lay a glove on its opponent, with Belgium ending the first half with two shots compared to France's 12. 

The triumph was sealed by a moment of magic, with N'Golo Kante laying the ball to Dembele, who drove at the Red Devils defence before rifling a fierce left-footed effort beyond the grasp of Koen Casteels. 

There was also a moment of history made in the 79th minute, with Matteo Guendouzi leaving the field to be replaced by Antoine Griezmann to claim his 137th French cap, going joint-third on Les Bleus' all-time list alongside Olivier Giroud.

Each of France's last five goals, excluding own goals, have now been scored by players under contract at Paris Saint-Germain, the longest such run by the Les Bleus since between June and August 2003.

Dembele was a particular standout for the hosts, producing the most shots (four), shots on target (two) and touches in the opposition box (nine), with his 19 passes into the final third a total only bettered by Manu Kone (22).