St Clement beat St Saviour 4-1 at Springfield to win the inter-parish Trinity Shield for the first time since 2008.
Lucas Parker headed St Saviour into an early lead, but Matty Rawlings stooped to level from a corner just before the break.
And St Clement were ahead within 16 seconds of the restart, 17-year-old forward Sol Solomon powering home at the back post.
St Saviour had a penalty saved and were punished soon after as Karl Hinds' neat finish took the game away from them, before Rawlings added a fourth in the closing stages.
It is St Clement's 15th title in the competition, which is contested by Jersey's parishes - excluding St Helier, rather than clubs.
Islanders can play for the parish they live in or the parish their parents lived in when they were born.
Watch: Highlights from the 2019 Trinity Shield final