Herbed Potato Soup (Amazing) - cooking recipe

Ingredients

2 medium potatoes, peeled and diced
2 cups water
1 large onion, chopped
1/4 cup butter, cubed
1/4 cup all-purpose flour
1 teaspoon salt
1/2 teaspoon dried thyme
1/4 teaspoon dried rosemary, crushed (optional)
1/4 teaspoon ground pepper
1 1/2 cups milk
Optional ingredients
1 chicken breast, cut and cooked
1/2 head cauliflower or 1/4 head cauliflower, cut into florets
1/2 head broccoli or 1/4 head broccoli, cut into florets
1/2 cup cheese (more or less)

Preparation

Bring water to a boil in a large saucepan.
Add potatoes, cook over medium heat until tender. (Note: sometimes I add the cauliflower or chicken to the potatoes while they cook. You don't have to, but it's convenient.) Set aside. DO NOT DRAIN!
Meanwhile, in another saucepan, saute onion in the butter until tender. Onions will have a sweet smell and will look glazed over.
Stir in the flour, salt, thyme, rosemary (optional), and pepper.
Gradually add milk. Bring to a boil. If you like, add the cheese.
Cook and stir for 2 minutes.
Add potatoes (and extra, optional ingredients) with cooking liquid. Heat through.