INGREDIENTS
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2 tablespoons olive oil, divided
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4 (6-ounce) skinless, boneless chicken breast halves
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3/8 teaspoon salt, divided
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1/4 teaspoon freshly ground black pepper
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3/4 cup fat-free, lower-sodium chicken broth, divided
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1/4 cup unfiltered apple cider
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2 tablespoons whole-grain Dijon mustard
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2 tablespoons butter, divided
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1 tablespoon chopped fresh flat-leaf parsley
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12 ounces Brussels sprouts, trimmed and halved