Don't skip cooking the onions for the meatballs. This step softens the onions so they more easily add their sweet flavor to the meatball mixture. Best part? This slow-cooker meatball soup only requires 25 minutes of hands-on time.
Ingreadient
1 tablespoon olive oil
2 cups chopped yellow onions (from 1 onion)
5 garlic cloves, minced (about 5 teaspoons)
1 ½ teaspoons kosher salt
½ teaspoon black pepper
4 cups unsalted chicken stock
1 cup chopped carrots (from 1 carrot)
1 cup chopped zucchini (from 1 zucchini)
4 ounces green beans, trimmed and cut into 1 1/2-inch pieces (about 1 cup)
½ cup thinly sliced celery (from 1 celery stalk)
1 (14.5 ounce) can no-salt-added diced tomatoes
1 pound ground chicken
⅓ cup whole-wheat panko (japanese-style bread crumbs)