Creamy White Chili - Mrs. Tucker

1 lb boneless chicken breasts, cooked and shredded
1 can (14.5 oz) chicken broth
1 medium onion, chopped
2 cans chopped green chilis
1 1/2 tsp garlic powder
2 cans Great Northern beans, drained and rinsed
1 tsp salt
1 tsp ground cumin
1 tsp oregano
1/2 tsp pepper
sprinkle of cayenne pepper
1/2 cup whipping cream
1 cup sour cream

Saute onion and garlic powder.  Add beans, chilis and seasonings, along with the broth.  Add chicken to pot.  Boil then reduce heat and simmer uncovered for 30 minutes.  Remove from heat; stir in sour cream and whipping cream.