"Smoky grilled onion and your favorite barbecue sauce transform grilled pork tenderloin into a hearty summer sandwich. If you're concerned about sodium, be sure to choose a lower-sodium barbecue sauce...."
INGREDIENTS
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1 small yellow onion, cut into 1/2-inch-thick rounds
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1 teaspoon canola oil
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2 whole-wheat buns, split horizontally
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Chipotle-Marinated Pork Tenderloin, grilled (see recipe), thinly sliced
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1/3 cup prepared barbecue sauce