Chicken Enchilada Casserole

Name: Chicken Enchilada Casserole
Ingredients: 1 1/2 cups diced sweet onion; 2 large poblano peppers, seeded and diced; 2 tablespoons canola oil; 3 garlic cloves, minced; 2 (10 3/4-oz.) cans cream of chicken soup; 1 (8-oz.) container sour cream; 2 (4.5-oz.) cans chopped or diced green chiles; 1 cup chicken broth; 1 (1-oz.) envelope taco seasoning mix; 18 (6-inch) corn tortillas, quartered; 6 cups shredded cooked chicken; 2 cups (8 oz.) shredded extra-sharp Cheddar cheese; 2 cups (8 oz.) shredded pepper Jack cheese