Tortilla-Crusted Stuffed Portobello Burgers

This burger is inspired by the indulgent, unique veggie burger at Alias, a now-closed restaurant that was on Manhattan’s Lower East Side. It’s formed by two portobello mushrooms that sandwich a thick slice of queso blanco and a layer of puréed black beans, then crusted with panko and deep-fried. I use tortilla chip crumbs instead of panko and have lightened it up a bit with a baking method, but this is still a burger worth writing home about. It’s great on a big, soft bun and topped with pi