If you’re looking to mix things up, you can add a handful of sliced mushrooms or a cup of baby carrots into the slow cooker for extra veggies. You can also substitute the cream of chicken soup with cream of mushroom or cream of celery for a different flavor profile. If you prefer a little kick, a pinch of paprika or red pepper flakes in the sauce can add a nice hint of heat. For a lower-fat version, use Greek yogurt instead of sour cream.