The smooth, silky cream of broccoli soup is made with only 5 ingredients and is your answer to weeknight dinner boredom. Just throw everything into a pot, simmer, blend and serve!
Heat a pot over medium high heat and the butter. Swirl around until the butter is foamy.
Add the onion and cook for about 5 minutes until soft.
Add the potato, broccoli, and water. Turn up the heat and bring the soup to a boil.
Once boiling, reduce the heat to medium low and simmer for 20 minutes. Season with salt.
Remove the soup from heat and let it cool slightly. Then using an immersion blender or standard blender, blend the soup in batches until smooth and return to the original pot.
Warm the soup through on low heat and adjust the seasoning to your taste. Add in the cream if using, otherwise ladle into bowls and serve immediately.