In Dutch oven or stockpot, mix squash, apple, onion, brown sugar, salt, cinnamon and pepper.
Add broth.
Cover; heat to boiling over medium-high heat.
Reduce heat; simmer about 20 minutes or until squash is tender.
In blender or food processor, place one-third of mixture.
Cover and blend until smooth; return to Dutch oven.
Repeat twice to blend remaining soup.
Stir in milk and yogurt.
Heat over low heat, stirring occasionally, just until thoroughly heated.
Serve soup topped with chives.
Notes / Tips / Wine Advice:
Time-saver:
Purchase already peeled and cut-up squash if available at your grocery store. Or, you can use a swivel-headed peeler and make quick work of peeling the squash.
Quick Variation:
To make this recipe meatless, use vegetable broth in place of chicken broth.