Step 1

In a large covered saucepan cook squash, carrots, and leek in hot butter over medium heat about 8 minutes, stirring occasionally. Add broth. Bring to boiling; reduce heat. Simmer, covered, for 25 to 35 minutes or until vegetables are very tender. Cool slightly.

Step 2

Place one-third of the squash mixture in a food processor or blender. Cover and process or blend until almost smooth. Repeat with remaining squash mixture. Return all of the mixture to saucepan. Add white pepper and nutmeg; bring just to boiling. Add half-and-half; heat through. If desired, garnish each serving with crème fraîche, pumpkin seeds, and/or fresh tarragon.