Spring Asparagus Soup
Preheat oven to 400°F (200°C). Spread asparagus on a baking sheet and drizzle with olive oil. Roast on lower rack of oven until fragrant and lightly browned, about 10 min.
Meanwhile, in a large saucepan, melt butter over medium-low heat. Add onion, carrot and celery and sauté 5 min without browning.
Cut roasted asparagus into 2 in. lengths and add to saucepan along with chicken stock and lemon. Simmer until vegetables are tender, about 10 min. Meanwhile, sauté ham in a small skillet until slightly crisp. Set aside.
Fill a blender 2/3 full and purée soup in batches in a blender until smooth. Return to saucepan, season with salt and pepper and warm until heated through. Transfer soup to bowls and garnish with sour cream and ham.