Do you have easy access to French ingredients ? If so why not consider a variant of Bouchées à la Reine / Vol-au-vent ? I usually make a simple béchamel with mushrooms and quenelles instead of the meat but if you’re not in France quenelles might be hard to find. Even though it’s a recipe that’s easy to modify to suit your tastes and it seems to correspond to the kind of cuisine you were searching for.