Ingredients
- 3 tablespoons butter
- ¼ small onion, chopped
- 2 tablespoons all-purpose flour
- 1 cup half-and-half
- 1 ½ cups chicken broth
- salt and ground black pepper to taste
- 2 cups chopped broccoli
- 1 carrot, chopped
- 1 celery stalk, chopped
- 1 ¼ cups shredded mild Cheddar cheese
