These Sweet and Sour Pineapple Meatballs have all the flavors I remember, savory meatballs, colorful bell peppers, sweet pineapple, and that sticky sweet-and-sour sauce, but without the last-minute dinner rush. The slow cooker does the heavy lifting while you’re out at work, school pickup, or sitting through practices and games, and dinner is basically waiting for you when you walk in the door.