My neighbor made this for a picnic forever ago, and it is super easy to make. Easy to change it your own liking. Sometimes the onions can be too strong, so you may want to test before adding too many.
Bring water and margarine to a boil in a saucepan; reduce heat to low and stir in long grain and wild rice mix. Cover and simmer until rice is tender, about 25 minutes. Fluff with fork and allow rice mix to cool thoroughly.
Mix cooled rice mix with chicken, red onion, grapes, cashews, and mayonnaise. Serve immediately or chill before serving.
Per Serving: 449 calories; protein 16.4g; carbohydrates 25.2g; fat 32.5g; cholesterol 42.3mg; sodium 281.2mg.