KK or QQ with overcard on flop

I never know what to do with these hands. You're dealt QQ or KK UTG and raise, and get a caller or two. Flop comes A or K high when you have QQ, or A-high when you have KK.

Do you just call and if you get raised, fold? Or do you call and if someone bets, then fold? Or do you you say, "I'm betting all the way" ?

I never know what to do with these.