AK tptk oop on tough flop

[Irishman07]

Villain is 21/19/1 over 50 hands. No history other than he 3bet my button open once and I folded. Wasn't sure how to proceed on the flop as it hit a lot of hands in his range. Whats your line and why?

Full Tilt Poker No-Limit Hold'em, $2 BB (5 handed) Hand History converter Courtesy of PokerZion.com

saw flop|<font color="#C00000">saw showdown</font>

Button ($202.50)
SB ($192.80)
<font color="#C00000">Hero ($233.55)</font>
UTG ($302.80)
<font color="#C00000">MP ($228.75)</font>

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $7</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $25</font>, MP calls $18.

Flop: ($51) Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero???