[POKhER]

3bet the flop, button will often have a weak ace/PP and UTG will have to face 2 cold(If he calls i assume flush draw and will most likly C/f the turn).

If utg folds, bet the turn and C/c the river HU vs button(I think he may bluff it).

As you played it, C/f the turn to agression from UTG IMO.