This soup is fantastic, I just made some today. check out the reviews

Panera's cream cheese potato soup

4 cups chicken broth

4 cups potatoes, peeled and cubed

1/4 cup onion, minced

1/2 teaspoon seasoning salt

1/4 teaspoon white pepper

1/4 teaspoon ground red pepper

1 (8 ounce) package cream cheese, cut into chunks

Directions

1 Combine broth, potatoes, onion, and spices.

2 Boil on medium heat until potatoes are tender.

3 Smash a few of the potatoes to release their starch

for thickening

4 Reduce to low heat.

5 Add cream cheese.

6 Heat, stirring frequently, until cheese melts.

Here is a link that might be useful: Potato soup