Peel and dice the potatoes.
Chop the onion and mince the garlic.
Add the diced potatoes, onions, and garlic to the crockpot.
Pour in the vegetable broth.
Season with salt, pepper, and thyme.
Stir the ingredients to combine.
Cover and cook on low for 6-8 hours or high for 3-4 hours.
Once the potatoes are tender, mash a few with a fork for texture.
Stir in the heavy cream and shredded cheddar cheese.
Cook for an additional 30 minutes until heated through.