For a hands-off approach to sweet and sour chicken, try this slow cooker recipe. The chicken is coated in a light batter and browned in a skillet before being transferred to the slow cooker. The sauce is made with vinegar, ketchup, sugar, and soy sauce, and poured over the chicken. Cook on low for several hours until the chicken is tender and the flavors have melded together. Serve this slow cooker sweet and sour chicken over steamed rice for an easy and flavorful meal that requires minimal effort.