Steelers fans come to Heinz Stadium for more than just good football. This Allegheny burger, named after Allegheny county in Pennsylvania, is stacked with the stadium's namesake-braised onions and a sauerkraut aioli to make it more than just any old burger. Did we mention it's topped with pierogies?
*Pierogi are an Eastern European specialty that are popular in areas such as Pittsburg. If you're not lucky enough to be near a shop that sells them, you can usually find them for delivery online.
Over medium heat add the canola oil to medium-size sauté pan. Add the onion and caramelize, about 20 minutes. Add the soy sauce, Worcestershire sauce, sherry vinegar, and black pepper. Cook for 3-4 minutes and keep warm until ready to serve.
Mix all of the ingredients together in a bowl and reserve until ready to use.
Season the burgers with kosher salt and black pepper. Place each burger on a medium-high grill and cook to medium. While the burgers are cooking, take the pierogi and place in a sauté pan over medium heat with 1 tablespoon of butter and cook 3-5 minutes. At the same time, place the kielbasa in medium sauté pan with 1 tablespoon of canola oil and caramelize for 3-5 minutes. Place each burger on the bottom bun of the kaiser rolls and then top with the following: kielbasa, Heinz Ketchup braised onions, Cheddar and potato pierogi, red leaf lettuce, tomato, and then finish with sauerkraut aioli.