What should I say to let my manager know that I’m not coming back to work ever because I hate it?

I have two job offers so I don’t see the point in giving a two weeks notice and having to work more time in a place that I hate. The owners are dicks so I don’t care about pissing them off. But my direct manager is a sweetheart and I’m just looking for a nice and professional way to tell her over text or call that I’m quitting right away.