Line the slow cooker with tin foil
Cooked potatoes until soft and leave 2 cool enough to handle them and cut them in halves
Cook bacon and leave 2 cool enough to handle and cut them in to bite size pieces
Chop the onion and spring onion
Place half of the potatoes, bacon and onions in the slow cooker
Add half of the garlic granules and onion granules
Add half the butter to dot and season with salt and pepper
Repeat with the rest of the potatoes, bacon and onions
Add the rest of the garlic granules and onion granules
Add the rest of the butter to dot and season again with salt and pepper
Cover the top with foil
Cook on low for 4 hours 30 minutes - 5 hours
At the end add the bag of grated cheese and cook on high for 30 minutes