Broccoli Cheddar Soup

 Ingredients

• 1 tablespoon butter
• ½ onion, chopped
• ¼ cup melted butter
• ¼ cup flour
• 2 cups milk
• 2 cups chicken stock 
  
• 1 ½ cups coarsely chopped broccoli florets
• 1 cup matchstick-cut carrots
• 1 stalk celery, thinly sliced
• 2 ½ cups shredded sharp Cheddar cheese
• salt and ground black pepper to taste
• Sep 1

• Melt 1 tablespoon butter in a skillet over medium-high heat. Saute onion in hot butter until translucent, about 5 minutes. Set aside.

• Step 2

  Whisk 1/4 cup melted butter and flour together in a large saucepan over medium-low heat; cook until flour loses it's granular texture, adding 1 to 2 tablespoons of milk if necessary to keep the flour from burning, 3 to 4 minutes.

• Step 3

  Gradually pour milk into flour mixture while whisking constantly. Stir chicken stock into milk mixture. Bring to a simmer; cook until flour taste is gone and mixture is thickened, about 20 minutes. Add broccoli, carrots, sauteed onion, and celery; simmer until vegetables are tender, about 20 minutes.

• I don't follow step three. After I get the milk and chicken stock mixed in, I dump in all the veggies and let them cook while the mixture is thickening. 

https://www.allrecipes.com/recipe/235874/copycat-panera-broccoli-cheddar-soup/