Smoky, spicy, creamy, and bright, this green chile-chicken soup hits all the right notes. The real genius of this recipe rests in the mashed white Great Northern beans, which thicken and enrich the broth without adding extra fat or dairy. The creamy beans also temper the heat of this soup. The consistency of this soup is close to a stew, but if you prefer a slightly thinner soup, feel free to add extra chicken broth.
Heat oil in a large Dutch oven over medium-high. Add poblano and sweet onion; cook, stirring occasionally, until tender, about 5 minutes.
Add garlic; cook, stirring constantly, until fragrant, about 30 seconds.
Stir in broth, beans, enchilada sauce, salt, cumin, and coriander. Bring to a simmer, and cook, stirring occasionally, about 5 minutes. Using back of spoon, gently mash beans.
Stir in chicken; continue simmering until heated through, about 5 minutes.
Stir in cilantro. Garnish with radishes, sour cream, and additional cilantro. Serve immediately.