Cheeses - Use your favorite cheeses that melt well.
Flour - Substitute with gluten-free flour to make it gluten-free.
To Store
Refrigerate - Store leftover soup in a sealed, airtight container in the refrigerator for up to 4 days. Reheat on the stovetop over medium low heat.
Freeze - Allow soup to cool completely, then freeze in a sealed, airtight container for up to 3 months. There's a chance the cheese may separate when frozen. Tip: If you're making soup ahead of time and freezing for later, don't add the cheese. Save it for later when you're ready to reheat and serve the soup.