Ingredients

1 tablespoon margarine
2 teaspoons curry powder
3 leeks, chopped
3/4 cup diced potatoes
2 Granny Smith apples -- peeled, cored and chopped
3 cups vegetable broth
salt and pepper to taste
1/4 cup plain yogurt

Directions

In a medium saucepan over medium heat, melt butter. Stir in curry powder and cook 1 minute. Stir in leeks, potato and apples and cook 5 minutes. Pour in broth and bring to a boil. Cover, reduce heat and simmer 20 minutes.

Puree in a blender or food processor, or using an immersion blender. Season with salt and pepper and serve with a swirl of yogurt.