Directions

1. In a medium saucepan, heat 2 tablespoons oil over medium-high heat. Add shallot, red pepper flakes, and a pinch of salt. Cook, stirring occasionally, until shallots are tender and just beginning to brown, about 5 minutes.
2. Add chopped asparagus, and cook for 1 minute. Stir in broth and 1 cup water; bring to a boil. Reduce heat to a simmer; continue cooking until asparagus is tender, about 15 minutes.
3. Meanwhile, prepare and ice-water bath. Fill a medium saucepot with water and bring to a boil. Add salt, return to a boil, and add asparagus tips. Cook until just tender. Transfer asparagus tips to ice-water bath; let cool about 1 minute. Drain and set aside.
4. Remove from heat; add spinach. Using an immersion blender, puree soup while drizzling in remaining 2 tablespoons oil. Return to heat and cook until heated through; season with salt. Divide soup evenly between 4 bowls, garnish with asparagus tips, and serve immediately.