Name: Broccoli Cheddar Soup
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 6
Ingredients: 5 tablespoons unsalted butter (, divided); 1 small sweet onion (, diced small); 1/4 cup flour; 2 cups whole milk; 2 cups low-sodium chicken broth; 1 1/2 cups coarsely chopped broccoli florets; 1 large carrot (, cut into matchsticks (1 cup)); 1 stalk celery (, thinly sliced (1/2 cup)); 10 ounces sharp cheddar cheese (, shredded (2 1/2 cups) ); 3/4 teaspoon kosher salt; 1/2 teaspoon black pepper; 1/4 teaspoon ground mustard; pinch cayenne pepper