Add the potatoes and broth: Add the diced potatoes and broth to the pot. Bring to a boil, then reduce heat and let it simmer for about 20 minutes, or until the potatoes are tender.
Blend the soup: Using an immersion blender, blend the soup until smooth.
Stir in the cream: Stir in the heavy cream, and heat through. Season with salt and pepper to taste.
Serve and garnish: Serve hot, garnished with chopped green onions or parsley.
Notes
For a creamier texture, use starchy potatoes like Russets or Yukon Golds. You can also add spices for extra flavor.