In most cases, putting dairy into a slow cooker meal before the food is nearly finished is a no-no. Dairy, when left to cook for long hours, will curdle and spoil the appeal of your food without fail every time. The best way to add dairy, whether it’s cream or cheese, to slow-cooker meals is to add it in after and stir. That way, it still makes its way in, but it doesn’t have enough time to curdle. The exception to this, of course, is if you are using your slow cooker to make desserts in which case the dairy is mixed with other ingredients before cooking.