[thefisherman]

I agree, gotta raise the flop. Puts some pressure on the button to play his hand. Who knows, maybe he even lays down KK if he thinks you have a made hand. If he calls and UTG calls too I'm betting out again on the turn unless a spade falls. If they call again and the river is a blank, I'm check/calling.

As played, turn is a fold. You've got a min-raise and a check-raise all-in, and I agree the button's play is the most daunting.