Hearty Vegan Polenta and Kale Soup With Miso and Toasted Sesame Oil

Name: Hearty Vegan Polenta and Kale Soup With Miso and Toasted Sesame Oil
Cook time: 50 min
Total time: 50 min
Yield: 8
Ingredients: 6 tablespoons extra-virgin olive oil; 1 leek, finely chopped; Kosher salt and freshly ground black pepper; 3 medium cloves garlic, minced; Pinch red pepper flakes; 2 quarts homemade vegetable stock or an equivalent amount made with Better Than Bouillon No Chicken Base; 1 cup polenta (coarse corn meal); 1 quart packed roughly chopped kale leaves (stems removed); 2 tablespoons white miso paste; 2 teaspoons soy sauce; 4 scallions, thinly sliced; Toasted sesame oil, for serving