Pork and Sweet Potato Chili

1 large onion, chopped (1 cup)

1 lb boneless pork loin, trimmed of fat, cut into 3/4-inch cubes

4 teaspoons chili powder

1 cup Progresso® chicken broth (from 32-oz carton)

2 medium sweet potatoes, peeled, cut into 3/4-inch cubes (about 3 cups)

1 can (15 1/2 oz) great northern beans, drained, rinsed

1 can (14 1/2 oz) diced tomatoes, undrained

1 teaspoon grated orange peel

1 teaspoon salt

1/2 teaspoon pepper