For a thicker sauce, mix 1 tablespoon of cornstarch with 2 tablespoons of cold water and stir into the cooker during the last 30 minutes of cooking.
You can substitute fresh mushrooms for the cream of mushroom soup for a lighter version, but the texture will be less creamy.
Serve with mashed potatoes, egg noodles, or steamed green beans to soak up the delicious gravy.