Ingredients

• 2 tablespoons unsalted butter
• 1 tablespoon olive oil
• 2 cups chopped yellow onion (from 1 large onion)
• 1 cup chopped carrots (from 2 medium carrots)
• 1 cup chopped celery (from 2 large stalks)
• 1¾ teaspoons kosher salt
• 3 tablespoons all-purpose flour
• 4 cups unsalted chicken stock
• 2 cups whole milk
• 4 ounces uncooked whole-wheat egg noodles
• 3 cups coarsely chopped rotisserie chicken breast (from 2 rotisserie chickens)
• 1 cup frozen green peas