Preparation Preheat oven to 375°F. Brush cut side of squash with oil; place squash, cut side down, on large rimmed baking sheet. Roast until tender, about 1 hour. Cool slightly. Scoop squash out into large bowl. Measure 3 cups squash (reserve any remaining squash for another use). Melt butter in large pot over medium-high heat. Add onion, carrots, and apple; sauté 5 minutes. Add curry paste; stir 2 minutes. Add chicken broth, bay leaves, and 3 cups squash. Bring to boil; reduce heat to medium-low and simmer uncovered 1 hour. Discard bay leaves. Working in batches, puree soup in blender until smooth. Return to same pot. Stir in cream and honey. Season with salt and pepper. Rewarm over medium-high heat. Divide soup among bowls. Drizzle with sour cream; sprinkle with cilantro.