Early in the second half, Glenfield’s low strike from just outside the box was gathered by Borsheim with Aodhan Doherty’s effort wide shortly after.
Norway doubled their advantage when Granaas’ pass found the unmarked Braut, who scored with a first-time finish.
The busy Braut was then denied his hat-trick by the woodwork twice. The first time, his strike took a deceiving deflection and crashed off the crossbar before his effort from 20 yards struck the right-hand post.
Cheered on by a sold-out Seaview, Northern Ireland had a great chance to grab their first goal of the tournament in the closing stages of the game with Borsheim making a great reaction save to stop Kieran Morrison’s strike and the alert Norway defence quickly cleared Corey Smith’s follow up attempt.