INGREDIENTS
1 tbsp
olive oil
1
large yellow onion, chopped
2 lb
zucchini, sliced 1/4 in. thick
4 cups
reduced-sodium or homemade chicken broth
1 cup
loosely packed basil leaves, washed and stemmed, plus more for garnish
2 tbsp
crème fraîche (see Notes), plus more for garnish
1/4 tsp
chili powder, plus more for garnish
Kosher salt