Sunderland pipped Birmingham to the Championship title as Roy Keane's side demolished already-relegated Luton.
Daryl Murphy scored two goals for Sunderland
The Black Cats were two goals up inside the opening 10 minutes through Anthony Stokes' drilled shot and Daryl Murphy's 25-yard left-footed drive.
Early in the second half Sunderland were 3-0 up as Stokes set up Murphy, who tapped in from four yards.
Ross Wallace's left-footed strike from 30 yards made it 4-0, with David Connolly's header completing the rout.
It completed a remarkable season for Sunderland, who were rock-bottom of the table after losing their opening four matches.
Stokes gave Sunderland the perfect start, lashing a shot past Dean Brill after exchanging passes with Murphy in the fourth minute.
Two minutes later Murphy got on the scoresheet, collecting former Luton man Carlos Edwards' pass before unleashing a powerful left-footed shot past Dean Brill into the corner.
Sunderland started the second half in equally dominant fashion as Murphy scored with a close-range finish after good work by Stokes.
Sunderland added two more goals in the last 12 minutes, with two substitutes making their mark.
Wallace's left-footed shot flew past Brill and the Luton goalkeeper was soon picking the ball out of the net after Connolly headed in Grant Leadbitter's free-kick.
Luton: Brill, Keane, Coyne, Barnett, Emanuel, O'Leary (Langley 55), Spring, Heikkinen, Bell (Brkovic 60), Andrew, Idrizaj.
Subs Not Used: Perrett, Boyd, Talbot.
Booked: Coyne, Idrizaj, Keane, Brkovic. Sunderland: Fulop, Wright, Evans, Collins, Leadbitter, Edwards (Wallace 75), Whitehead (Connolly 57), Nosworthy, Murphy (John 57), Stokes, Yorke.
Subs Not Used: Varga, Liam Miller.
Booked: Stokes, Evans, Collins.
Goals: Stokes 4, Murphy 6, 46, Wallace 77, Connolly 86.
Ref: L Mason (Lancashire).