This verb is reflexive and goes with “Dativ” e.g.:
Ich gönne mir ein Stück Torte ( I treat myself to a piece of cake )
or
Gönne dir eine Pause ( give yourself a break )
@Kiavanlooveren or anybody interested can find more examples of how to use the verb here:
and this is the “Grammatik”
Have a nice weekend everybody 
