This is a gem from  The St. Paul Farmers' Market Cookbook from Ken Goff's time at the Dakota Jazz Club and Restaurant.

4 tablespoons unsalted butter
1 cup yellow onion, chopped
¼ cup sliced leeks (white part only)
4 large tart apples (I used Granny Smith), peeled and quartered
2 cups chicken broth
1 sprig fresh rosemary, about 1½ inches long
¼ teaspoon dried thyme
1 small bay leaf
1½ teaspoons salt
3 cups milk
4 small Russet potatoes, peeled and sliced ⅛ inch thick
8 ounces Brie cheese, rind removed, cut into pieces
salt and ground pepper to taste

1. In a soup pot with a heavy bottom, melt the butter over medium-high heat until it foams. Add the onion, leek, and apple. Stir to coat them, then reduce heat to medium and cook until onions are softened, about 8 minutes.

2. While onions are cooking, combine the milk and potatoes in a separate heavy-bottomed saucepan. Bring to a simmer over medium heat, reduce to medium-low, and cook slowly, stirring frequently, until the potatoes are tender, about 12 minutes.

3. When onions are softened in the first pot, add the chicken broth, rosemary, thyme, bay leaf, and 1½ teaspoons salt. Bring to a boil, reduce heat to medium-low, and simmer until the vegetables are tender, about 15 minutes.

4. When potatoes are tender, add them to the pot with the onions and apples. Puree in batches in a blender (or use an immersion blender in the pot), adding pieces of Brie gradually while blending just long enough to incorporate. Add salt and pepper to taste.

Serves: 6
Time: 1 hour