- 4 tablespoons extra-virgin olive oil, divided
- 3 tablespoons grated Parmesan cheese
- 2 tablespoons chopped fresh basil
- 2 large garlic cloves, chopped, divided
- 1 large onion, chopped (about 2 cups)
- 2 8-ounce packages frozen artichoke hearts, thawed
- 21/2 cups (or more) low-salt chicken broth or vegetable broth
- Puree 3 tablespoons oil, cheese, basil, and 1/4 teaspoon chopped garlic in mini processor until smooth. Season pesto with salt and pepper. Heat 1 tablespoon oil in heavy large saucepan over medium-high heat. Add onion and sauté until soft, about 6 minutes. Add all remaining garlic; stir 30 seconds. Add artichokes and 2 1/2 cups broth. Bring to boil, reduce heat to medium-low, cover, and simmer until artichokes are soft, about 7 minutes. Working in batches, puree soup in blender until almost smooth. Strain into same saucepan, pressing on solids to release liquid. Thin with additional broth by 1/4 cupfuls if desired. Season soup with salt and pepper. Divide among bowls; drizzle with pesto.