Slow-Cooker Sweet and Sour Meatballs

Directions

1. Preheat oven to 375°. In a large bowl, combine the first 6 ingredients. Add beef; mix lightly but thoroughly. Shape into 1-1/2-in. balls. Place meatballs on a greased rack in a 15x10x1-in. baking pan. Bake until lightly browned, 15-20 minutes.
2. In large bowl, combine tomato sauce, broth, chili sauce, brown sugar and vinegar. Transfer meatballs to a 5-qt. slow cooker. Pour sauce over top. Cook, covered, on low until meatballs are cooked through, 3-4 hours. To serve, sprinkle with green onion.