INGREDIENTS
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4 teaspoons extra-virgin olive oil , divided
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1 pound boneless, skinless chicken breast , trimmed, cut into 1/2-inch cubes
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1 cup sliced shallots
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1 10- or 12-ounce bag frozen mixed vegetables (2-2 1/2 cups), thawed
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1/4 teaspoon dried thyme
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2 cups reduced-sodium chicken broth , divided
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1/4 cup cornstarch
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1/4 cup reduced-fat sour cream
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1/4 teaspoon salt
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1/4 teaspoon freshly ground pepper
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6 sheets 9-by-14-inch phyllo dough , defrosted (follow package directions)
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Cooking spray (olive oil or canola oil)