"Inspired by the classic dish, these Salisbury Steak Meatball Subs feature homemade beef meatballs coated in rich gravy and topped with velvety cheese...."
INGREDIENTS
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1 pound lean ground beef
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3/4 cup panko bread crumbs
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1 large egg
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2 teaspoons ketchup
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1 teaspoon dijon mustard
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1 teaspoon garlic powder
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1/2 teaspoon dried oregano
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1 teaspoon kosher salt
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1/2 teaspoon freshly ground black pepper
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2 tablespoons extra-virgin olive oil ((for the skillet))
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2 tablespoons unsalted butter
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2 tablespoons flour
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1 & 1/2 cups beef stock
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1 tablespoon ketchup
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1 teaspoon Worcestershire sauce
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1/2 teaspoon onion powder
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salt and pepper (, to taste)
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8 ounces freshly shredded melty cheese ((such as gruyere, provolone, or mozzarella))
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6 hoagie rolls
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Fresh finely chopped thyme or parsley