Northwood equalised three minutes from time but Brady won the match with the last kick of the game when a goal-kick from Sam Meisel looped over the Northwood keeper and into the back of the net.
Brady joint-manager Wayne Meisel said: “For a debut season, these boys have exceeded all expectations. We’ve beaten three teams from higher divisions to lift the trophy. It’s a big achievement.
"We asked the boys to enjoy the game and give it their all - they certainly did that and more. They are a great bunch of boys and a credit to Brady Maccabi and we all look forward to the challenges of next season.”
Co-manager David Tibber commented: “The boys were amazing. They battled every second of the match. We played a formation to contain the opposition in a game that we knew would be tight It was the perfect ending to the perfect season."