INGREDIENTS
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1 pound frozen broccoli florets
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5 cups low-sodium chicken broth
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1 medium onion, diced
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2 medium carrots, finely diced
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2 (10.5-ounce) cans cream of celery soup
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1/4 teaspoon seasoned salt
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1/4 teaspoon kosher salt
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1/2 teaspoon freshly ground black pepper
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1/8 teaspoon cayenne pepper
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1 1/2 pounds processed melting cheese, such as Velveeta
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2 cups shredded sharp Cheddar cheese (8 ounces), plus more for serving