Peter Beardsley’s side convincingly beat Blyth Spartans 4-0 to lift the trophy.
Lubo Satka, Michael Richardson, Jonathyn Quinn and Gael Bigirimana were on target for Newcastle in front of a 1,234 crowd, which included a large and vociferous contingent from Blyth, at the stadium.
First-team manager Alan Pardew – whose Premier League side has scored just three goals at St James’s Park this year (as many as SUNDERLAND) – was among the spectators.
However, an injury to United defender Jamie Sterry – who was stretchered off – marred the win.
Newcastle dominated the first half, but they couldn’t find a way past Blyth goalkeeper Conor Grant until the 38th minute.
Bigirimana
Grant got a hand to a shot from Bigirimana, and defender Satka opened the scoring from the resulting corner.
Greg Olley had an effort saved before the break, and Sterry was carried off after suffering an injury in a 50-50 challenge with Robbie Dale.
United captain Richardson made it 2-0 with a close-range effort as the hour-mark approached.
Newcastle’s Hartlepool-born goalkeeper Jonathan Mitchell denied Daniel Maguire midway through the half.
And 18-year-old Quinn put the game beyond Blyth with 20 minutes left on the clock.
The forward kept his cool to beat Grant after being put through one-on-one, though Blyth felt he had been offside.
Substitute Rolando Aarons played in Bigirimana for Newcastle’s fourth goal with a superb defence-splitting pass, and the midfielder beat Grant with a neat finish.
NEWCASTLE UNITED: Mitchell; Sterry (Gibson, 55), Satka, Mbabu, Williams; Barlaser (Aarons, 60), Bigirimana, Kemen, Richardson, Olley; Quinn (Gilliead, 71).
Jonathyn Quinn told of his pride: “We always knew it would be a tough battle.
“We knew we’d have to work hard.
“In the end the score probably flattered us, but it was a good result.
“It’s a good tournament to win. We’re expected to win it every year, which is a bit of pressure, but it’s good to be able to deal with that and win the cup.”
Peter Beardsley: “I expect them to play a certain way, and they played some good stuff.
“I thought the second and fourth goals were really good goals. They were clever passes.
“The good thing is that they’re trying to take on board what we’re hoping for, and hopefully, in the long term, that’ll be successful for the club.
“Without being disrespectful, we should at least be in the final every year, and look to win it every year.
“I think this is a massive tournament for the Northumberland FA, and for us as well.
“It’s great for our young lads to play at St James’s Park.”