In a large bowl, combine the meatloaf ingredients, be careful not to over mix.
Shape the meatloaf on one side of the slow cooker, trying to keep the meatloaf from touching the sides.
Make a foil "bowl" out of a foot or so of foil.
Shape it next to the meatloaf.
Add the potatoes and onions.
Season the potatoes and onions with the salt, pepper, and onion powder; toss them by hand.
Drizzle over the melted butter.
Cover and cook on LOW for 5 hours. DO NOT OPEN THE LID WHILE THIS IS COOKING, or the potatoes will not get tender.
After the cooking time is up add the cheese on top of the potatoes, and cover for about 5 minutes more or until the cheese is melted.
Add ketchup to the top of the meatloaf and serve.
Enjoy!
Notes
Place any remaining meatloaf and potatoes in an airtight container (together or separate) and keep in the fridge for up to 4 days. Reheat in the microwave until warmed throughout.
Ground turkey or ground chicken can be used instead of beef.