INGREDIENTS
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INGREDIENTS
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1/2 cup prepared barbecue sauce
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1 tablespoon tomato paste
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1 tablespoon cider vinegar
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1 chipotle chile in adobo sauce (see Note), minced, or 1/4 teaspoon ground chipotle pepper
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1 tablespoon plus 2 teaspoons canola oil, divided
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1 pound portobello mushroom caps (about 5 medium), gills removed, diced
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1 medium onion, finely diced
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4 8- to 10-inch whole-wheat tortillas
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3/4 cup shredded Monterey Jack cheese