Secret Restaurant Refried Beans

Refried beans are a basic with any Mexican dish I serve in my home.  But there's a secret.  And oh so easy.  Here's all you need:

1 can (15 oz) refried beans
1/2 can (14 oz) enchilada sauce
1/3 cup sour cream
1/4 cup (or more, to taste) diced onions
shredded cheddar cheese

Mix your beans, sauce, onion, and sour cream, whisk well.  Spray a one quart baking dish with cooking spray (I like hickory or mesquite, usually available only via e-mail.  Otherwise, use canola oil spray).  Pour mixture into prepared baking dish.  Top with shredded cheddar cheese.  Bake at 350 for 20-30 minutes.