Wash and peel the potatoes then cut into one-inch pieces.
Add the chopped potatoes to the bowl of the slow cooker and season with salt and pepper.
Next add the garlic and the chicken broth to the potatoes and toss to combine.
Cover and cook on high for four hours.
When the potatoes are cooked and fork-tender, add the butter and stir to melt.
Use a hand-held potato masher to mash the potatoes then stir to mix the potatoes and broth.
Slowly add in the warm heavy cream and mash until potatoes reach the right consistency and are smooth and creamy.
Add the shredded cheese and stir to combine.
Taste to see if you want to add additional salt.