Sauté the Vegetables – Heat olive oil and butter in a pot over medium heat. Add the carrot, leek, and zucchini. Cook for 5 minutes until slightly softened. Stir in the minced garlic and cook for 30 seconds.
Thicken the Soup – Sprinkle the flour over the vegetables and stir well. Let it cook for 1-2 minutes before gradually adding the water. Stir constantly to prevent lumps.
Simmer Until Tender – Bring the soup to a gentle boil, then lower the heat and let it simmer for about 15 minutes, until the vegetables are soft.
Blend Until Smooth – Using an immersion blender, blend the soup until smooth and creamy. If using a regular blender, allow the soup to cool slightly before blending in batches.
Add Cream and Season – Stir in the cream and season with salt to taste. Let it warm through for another 2 minutes without boiling.
Serve and Garnish – Pour into bowls and sprinkle with hemp seeds and freshly chopped parsley. Serve hot and enjoy!