Chile verde is a mexican green chile sauce made with tomatillos, garlic and hot peppers. Here, the sauce is poured over chicken quarters and infuses them with a sweet spice as the dish slowly cooks. Don't skip charring the vegetables--it's key to opening up their bold flavors and giving the sauce its iconic dark green color. Garnish your slow-cooker salsa verde chicken with thinly sliced jalapeño chiles and fresh thyme sprigs, if desired.