"Italian beef sandwiches are the best way to you up your leftover roast beef. Easy to make in the slow cooker, they make the best out of your roast beef!..."
INGREDIENTS
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1 6 pound rib roast (cooked according to these instructions)
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1 ounce Italian Seasoning mix (1 packet)
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1/2 ounce beef au jus seasoning (1/2 packet)
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8 oz pepperoncini pepper slices + 2 tablespoons juice from jar (use more juice if you like things spicier)
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12 ounces roasted red peppers (drained and diced)
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1/2 red onion (sliced)
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14.5 oz beef broth
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provolone cheese (sliced)
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hoagie buns
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horseradish sauce for serving