Add the water and butter (unmelted) into your slow cooker.
Cover, and cook on HIGH for 1.5 hours or until hot.
Add the stuffing mix and stir.
Place the lid back on the slow cooker and switch to the warm setting. Let stand for 5 minutes.
Fluff with a fork and serve!
Notes
How many boxes of stove-top stuffing can I make in my slow cooker?
You can make up to five boxes in a 6-quart slow cooker.
Follow and measure the amount of ingredients for each box - no need to adjust for the slow cooker.
Can I use another brand of stuffing mix?Yes, though you will need to follow the amounts of ingredients to be added that that package indicates. How long can I keep this warm?
Cooked stuffing will keep on the warm setting for 3 hours but will need some babysitting.
Stir every half hour and add a touch of water if looks like it's drying out.
What can I add to boxed stuffing to make it special?Add one or more of these options below to make your stuffing extra special. (Add when the stuffing is done).
Ground sausage: Cook and crumble a 1/2 pound of ground sausage for each box of stuffing.
Vegetables: Sauté carrots, onion, and celery for additional flavor and veggies.
Dried cranberries: Add 1/4 cup for each box of stuffing for a festive touch.
Apples: Dice 1 apple per box of stuffing for a sweet crunch.