Vegetarian Enchilada Casserole/Black Beans & Sweet Corn Enchilada Casserole

Enchilada Casserole is one of the classic dish which exists in many versions, when i googled for a vegetarian Enchilada casserole i have seen some million versions either with homemade enchilada sauce or else with store bought ones. Some recipes calls for variety of vegetables, meats while some r..