Begin by thoroughly greasing the inside of your slow cooker with cooking spray or butter to prevent sticking.
Wash and peel the potatoes (if desired), then thinly slice them, ensuring even thickness for consistent cooking.
In a large mixing bowl, combine the thinly sliced potatoes with the melted butter, ensuring each slice is coated. Sprinkle the Lipton Onion Soup mix over the potatoes and mix well to evenly distribute the flavors.
If using cheese, add the shredded cheddar to the potato mixture and blend it through.
Carefully layer the seasoned potatoes into the slow cooker and pour the chicken broth or water over the top. The liquid will help steam the potatoes to a tender finish while the slow cooker cooks.
Cover and cook on low for 5 to 6 hours or on high for 2 to 3 hours. Cooking times may vary depending on your specific slow cooker and the thickness of your potato slices.
Once the potatoes are tender and cooked through, taste and adjust seasoning with salt and pepper.
Serve your Slow Cooker Lipton Onion Potatoes hot as a comforting side dish ready to complement your main course. Enjoy the ease and flavor of this classic, heartwarming recipe.