This soup thickens a bit as it sits. If reheating, do so gently over low heat, and add a splash of broth if needed. Avoid boiling after adding cheese/cream! For a smoother soup, use an immersion blender following step 5. Make it vegetarian with veggie broth. Try adding cauliflower, roasted broccoli, or even some cooked chicken. White cheddar, Swiss, or Gruyère are fun swaps.