Creamy Chicken Fajita Soup

• 2 Tablespoons butter
• 1/2 medium onion, thinly sliced
• 1/2 green pepper, sliced
• 1/2 red pepper, sliced
• *Fajita seasoning 1 packet, or homemade recipe below
• 2 1/2 cups chicken broth
• 1 can black beans, drained and rinsed
• 1/2 cup frozen corn
• 1 (14.5 oz) can diced tomatoes
• 1 (8 oz) package cream cheese, softened
• 1/2 cup shredded sharp cheddar cheese
• 2 cups cooked chicken

Fajita Seasoning (combine and mix well):

• 1 Tablespoon cornstarch
• 2 teaspoons chili powder
• 1 teaspoon salt
• 1 teaspoon paprika
• 1 teaspoon white sugar
• 1/2 teaspoon onion powder
• 1/2 teaspoon garlic powder
• 1/4 teaspoon cayenne pepper
• 1/2 teaspoon ground cumin