Chicken and Chilies

I got this off of Chalonn's friends blog "On my menu". I like it b/c its, easy, simple and tasty.

2-3 chicken breasts (or can)
1/4 tsp black pepper
1/4 tsp salt
1/2 onion, chopped
2 cloves garlic, chopped or minced
1 cup chicken broth
1 can tomato sauce
1 can black (or pinto) beans
1 can chopped chilies
1 tsp chili powder (or less)
1/2 tsp gr. cumin

Cube or shred chicken. (As always, I'm a big fan of putting chicken in the crock pot for a couple of hours and then shredding it when I'm ready to use it. So easy.) Add all ingredients. Serve over brown rice. Top with sour cream, cheese, or avocado.