1. Heat the olive oil in a large pot over medium heat. Add the onions and cook until softened. Add the garlic cloves and carrots to the pot and cook for a few minutes. Stir in the ginger, apple cider vinegar and broth. Reduce to a simmer and cook until the carrots are soft, about 30 minutes.

2. Blend until smooth using an immersion blender. If using a standard blender, cool before blending. Taste and adjust seasonings. Add maple syrup, if desired.

3. Make pesto: Combine the pepitas and garlic in a food processor. Add the carrot tops and lemon juice. While the blade is running, drizzle in the olive oil. Blend to achieve desired texture.

4. Serve the soup hot with the pesto on the side.