INGREDIENTS
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1-2 medium dried pasilla (negro) chiles, stemmed and seeded**
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1 (15-ounce) can diced fire-roasted tomatoes in juice
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2 Tbsp. olive oil
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1 medium white onion, sliced 1/4-inch thick
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5 garlic cloves, peeled
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2 quarts good-quality chicken broth
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1 large epazote sprig (optional)
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4 (about 1 1/4 pounds total) boneless, skinless chicken breast halves, cut into 1/2-inch cubes
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1 large ripe avocado, pitted, flesh scooped from the skin and cut into 1/4-inch cubes
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1 1/2 cups (6 ounces) shredded Mexican melting cheese (like Chihuahua, quesadilla or asadero) or Monterrey Jack
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4 cups roughly-broken tortilla chips
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1/2 cup Mexican crema, sour cream or creme fraîche for garnish
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1 large lime, cut into 6 wedges, for serving
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1/2 cup fresh chopped cilantro, for serving
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1/2 cup cotija cheese, for serving (optional)