You truly can just dump the recipe ingredients and leave it until the cook time is up. The finishing touch of toasted pecans adds the right amount of crunch to these slow-cooker mashed sweet potatoes.
Stir together the potatoes, butter, juice, syrup, salt, and pepper in a 5- to 6-quart slow cooker coated with cooking spray. Cover and cook on LOW until the potatoes are tender, about 3 hours and 30 minutes. Coarsely mash the potatoes to the desired consistency. Transfer to a serving platter, and top with the pecans. Serve with additional butter on top, if desired.