Broccoli Cheese and Potato Soup

INGREDIENTS

1 tbsp

butter

1

medium yellow onion, chopped

3

large white potatoes, cubed, about 4 cups

4 cups

chicken broth

1/2 tsp

kosher salt

6 cups

broccoli florets

3 cups

whole milk

3 cups

shredded medium cheddar cheese

2 tbsp

flour

1 tsp

freshly ground black pepper