Char the poblanos over an open flame or under the broiler until the skin is blackened. Place them in a sealed bag for 10 minutes (this steams the skin so it slips right off).
3-4 Poblano Peppers
Peel away the charred skin, remove the seeds and stems, and give them a rough chop.
In a small pan, lightly sauté the onion and garlic until translucent and fragrant (this removes the raw “bite” and sweetens the base of your sauce).
¼ White Onion, 2-3 Garlic Cloves
Combine the roasted peppers, sautéed onion and garlic, cream cheese, Mexican crema, cilantro, and chicken broth in a blender. Process until completely smooth.
8 oz Cream Cheese, 1 cup Mexican Crema, 1 bunch Cilantro, ½ cup Chicken Broth
Cook the tagliatelle in heavily salted water until al dente. Reserve a cup of pasta water before draining.
1 lb Tagliatelle
Pour the green sauce into a large skillet over medium-low heat. Add the pasta and toss gently, adding a tablespoon of pasta water if needed (the starch in the water helps the sauce marry to the noodles).
Plate immediately and top with a generous amount of grated Cotija cheese.
1 cup Cotija Cheese