Peel the squash with a potato peeler. Cut in half length wise, then cut into 1-inch cubes.
Place the squash into the slow cooker. Cut the butter into slices. Place the butter pats all over the cut squash. In a small bowl mix together the brown sugar, cinnamon, nutmeg, cloves, and salt. Sprinkle this mixture over the squash and butter.
Cover and cook on HIGH for 3 hours without opening the lid during the cooking time.
Serve and enjoy.
Cut up sweet potatoes can be used in place of the butternut squash if desired. Nutritional values are approximate. If you require a special diet, please use your own calculations. The values below are for 1/8 of the recipe.