4 tablespoons butter, divided
2 cups leeks, trimmed and sliced (white
    and light green parts only)
12 to 15 cloves peeled garlic, coarsely chopped
6 cups chicken broth
2 pounds potatoes, peeled and cubed
1 teaspoon salt
1 teaspoon fresh parsley, chopped
1 cup whipping cream
Croutons (for garnish)

In Dutch oven, melt 2 tablespoons butter. Saut