mom's white chicken chili

Ingredients

• 6 cans 15 1/2 oz each great northern beans, drained and rinsed
• 3 cans 5 oz each chicken, drained
• 32 ounces chicken broth
• 3 cups 12 oz shredded monterey jack cheese
• 2 - 4 1/2 oz cans diced green chiles
• 2 small onions, chopped
• 1 1/2 cups sour cream
• 1 tablespoon olive oil
• 2 teaspoons ground cumin
• 1 1/2 teaspoons dried oregano
• 1/4 teaspoon ground white pepper
• 1 teaspoon garlic powder