Crockpot Hawaiian Chicken

Source: Jan Taylor

6 pounds skinless, boneless chicken breasts, halved
2 cans pineapple slices, drained
2 cans mandarin oranges, drained
1/4 cup cornstarch
1/4 cup brown sugar, packed
1 envelope stir-fry chicken seasoning blend

Combine all ingredients, except the chicken in the crockpot. Stir well. Add the chicken and stir well to coat. Cover and cook on preferred setting: LOW - 6 to 8 hours; HIGH - 3 hours