What Brachah are Hamantaschen?
The brachah over hamantaschen is generally mezonos, because the dough used nowadays for hamantaschen is usually mezonos.
If the dough is hamotzi but the filling is sweet, the brachah will remain mezonos—provided that the sweet nature of the filling earns primary status, whereby the pastry is demoted to a secondary, facilitator role. (Unlike kreplach, this snack is not designed to satiate, to be used as part of a meal, but simply as a delicacy, for pleasure.)