This is super-easy and one of our favorites.
1 can black beans, rinsed and drained
2 cups salsa
4 chicken breasts
Mix 1 cup salsa and black beans. Pour mixture into the bottom of a slow-cooker. Place chicken breasts on top of bean mixture. Top with remaining salsa.
Cook on low setting for 4 hours. It is ready when the chicken is fall-apart tender. This is delicious topped with cheddar cheese or sour cream. Alternatively, you can mix some cream cheese into the sauce just before serving. Doing this makes it less spicy- I like to mix cream cheese into some of the sauce for my daughter. My slow-cooker seems to cook things faster than the time indicated in most recipes. You may need to cook this for additional time.