Chicago Italian beef sliders are mini sandwiches made with slow-cooked, shredded chuck roast in savory au jus, topped with hot giardiniera, roasted peppers, and melted mozzarella. They're ideal for game day entertaining and can be prepped ahead.
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In a slow cooker, combine water, beef bouillon paste, Worcestershire sauce, soy sauce, and garlic powder. Whisk to combine.
Add the quartered shallot, bay leaves, garlic cloves, and quartered onion to the slow cooker.
Cut the chuck roast into 4-5 large pieces, trimming any excess fat. Place the beef into the slow cooker and season generously with steak seasoning.
Cover and cook on high for 4 hours.
Meanwhile, place sliced green bell peppers on a baking sheet. Drizzle with olive oil and season with salt, dried oregano, and a pinch of sugar. Toss to coat.
Roast the peppers for about 40 minutes, mixing them halfway through, until softened and slightly charred.
Once the beef is tender, remove it from the slow cooker. Strain the au jus, discarding the solids (onions, shallots, etc.).
Using two forks, shred the cooked beef. You can also give it a rough chop for a finer texture.
Preheat your oven to broil or a high temperature to melt the cheese. Split the mini French rolls and arrange the bottom halves on a baking sheet. Pile the shredded beef evenly onto the rolls.
Top the beef with the roasted green peppers.
Add a layer of drained hot giardiniera over the peppers.
Cover everything with a generous layer of shredded mozzarella cheese.
Place the baking sheet in the oven and bake just until the mozzarella cheese is melted and bubbly.
Optionally, dip the top buns in the reserved au jus before placing them on top of the sliders.
Serve immediately with extra au jus on the side for dipping.
Store shredded meat and au jus separately in airtight containers for up to 4 days; reheat gently on the stovetop or in a slow cooker before assembling.
slow cooker or Dutch oven · meat shredding forks or stand mixer paddle
Yes. Cook the roast and prepare the au jus up to 2 days ahead. Reheat gently before assembling sliders just before serving to keep the rolls fresh.
Chuck roast is ideal because it becomes tender and shreds easily when slow-cooked. Look for a 2.5-3 lb piece with good marbling.
Yes, slow cookers work well for this recipe. Cook on low for 6-8 hours until the meat shreds easily with a fork.
Giardiniera is an Italian pickled vegetable condiment with peppers and spices. Find it in the condiment or Italian foods aisle, or use hot banana peppers as a substitute.
Freeze the shredded meat and au jus separately for up to 3 months. Thaw overnight and reheat gently. Assemble with fresh toppings and rolls before serving.
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