Chop broccoli and potatoes into equal size.
In a large pot cover broccoli and potato with water or broth so that the water is about 1" above veggies.
Boil until veggies are tender.
Blend with an immersion blender until smooth and creamy.
Add salt and pepper to taste.
You can also add minced leeks or garlic to the soup as its cooking, or garlic powder, to make the flavors pop