Izale McLeod's first goal since rejoining the Dons and superb half-volleys from Daniel Powell and substitute Stephen Gleeson, the latter marking his return from a three-month injury lay-off, sealed a first win in nine games for Karl Robinson's men.
Robinson said: "It was a night when everything came together, but it was a frustrating night as well because that was us at our best, and we've not seen it often enough.
"The reasons for that are suspensions and injuries, but here I've been able to put the full attacking four out that I wanted to put out at the start of the season.
"But, still, we were without an awful lot of players and the players just put a wonderful performance in.
"I thought the place was rocking. It could be the catalyst for bigger and better things.
"I think all your media dreams came true - Izale scoring his first goal since his comeback, Daniel Powell signing a new two-year deal and topping it off with a wonder goal and Stephen Gleeson comes back from nowhere and scores the last goal. Pick your headline!
"I got told not to put Stephen on, but I whispered to him 'Stephen, do you fancy it?' He said 'yes, get me on' and he sprinted on and scored a wonder goal."