Slice fingerling potatoes in half, lengthwise. In a 4-quart slow cooker, toss cut fingerling potatoes with melted butter. Season potatoes with salt, parsley, rosemary, thyme, dill, garlic powder and black pepper. Stir. Then cover and cook on low for 4 hours or high for 2 hours. After cooking, stir in heavy cream and shredded cheese. Cover and cook on high for an additional 15 minutes until warmed through and cheese is melted.