Cozy Potato-Carrot Kugel

Name: Cozy Potato-Carrot Kugel
Prep time: 35 min
Cook time: 1 h
Total time: 1 h 35 min
Cuisine: American
Ingredients: 2 1/2 pounds (about 4 medium) russet potatoes, scrubbed; 1/2 pound (about 2 medium) sweet potatoes, scrubbed; 1 pound (about 5 medium) carrots, scrubbed; 1/2 pound yellow onion (about 1 large), halved and peeled; 1 tablespoon cornstarch or potato starch; Kosher salt and freshly ground black pepper; 1/2 teaspoon ground cinnamon (optional); 4 large eggs; 1/2 cup extra-virgin olive or vegetable oil, divided; Flaky sea salt, for serving; Sour cream and freshly chopped dill or chives, for serving (optional)