Miso Soup with Sweet Potato Dumplings

Name: Miso Soup with Sweet Potato Dumplings
Ingredients: 1 pound sweet potatoes; 1 tablespoon canola oil; 2 cloves garlic, chopped; 1 shallot, chopped; 1/8 teaspoon red pepper flakes; 1/2 teaspoon salt; 1/4 teaspoon freshly ground black pepper; 4 cups sliced bok choy; 1 cup bean sprouts; 1 cup edamame, shelled; 12 wonton wrappers; 3 tablespoons white miso, plus more to taste; 2 scallions, thinly sliced