olive oil, extra virgin
yellow onion, sliced into 1/4 inch rings
bottle stout beer, guinnes would work good here
kosher salt and freshly ground black pepper to taste
1 1/2 lb
sesame seed buns
1Heat oil in frypan, add onions, and cook over med high heat until browned, about 10 min.
2Add beer and cook until the beer has reduced almost completely, about 10 min, season with the salt and pepper.
3Season patties and grill to desired doneness, for us that's 6 to 8 min or so.
4Top each burger with cheese the last few min of cooking to melt.
5To assemble, slather dijon mustard on buns and top burgers with onions.