Chicken Enchilada Casserole

Ingredients (19)

• 1¼ pounds boneless, skinless chicken breasts
• 1½ cups chopped onion
• 4 medium garlic cloves,
• 1/2 cup beer
• 1/4 teaspoon ground cayenne pepper
• One 28-ounce can chopped tomatoes,
• 1/2 cup thinly sliced green onions,
• Two 2.25-ounce cans sliced olives,
• Two 4-ounce cans chopped green chiles,
• 5 tablespoons all-purpose flour
• 1/2 teaspoon salt
• 1/4 teaspoon ground cumin
• 1/4 teaspoon ground coriander
• 2 cups 1% low fat milk
• 2 large egg whites,
• 1½ cups reduced-fat Mexican blend cheese
• Six 6-inch corn tortillas,
• 1/2 cup light sour cream
• 1/2 cup salsa