Begin by preheating the oven to 180C (356F) . Chop the leeks and parsnips into chunks and place onto a lined baking tray. Drizzle over the olive oil, wrap the garlic cloves in tin foil, and roast in the oven for 25 minutes.
Once roasted add to a blender along with the thyme leaves from 4 of the sprigs, salt, pepper, vegetable stock and cream. Blend until smooth.
Option here to transfer to large pan and heat up on the hob to desired temperature.
Serve with some extra cream drizzled over and garnish with the remaining thyme leaves, sunflower seeds and a pinch of pepper.
Video
Notes
Step-by-Step Photos: My blog post includes helpful step-by-step photos to help guide you through making this recipe.Substitutions & Variations: I have included a list of these in the post above.To Store: Store in an airtight container in the fridge for 4-5 days. Reheat in a pot/pan over a low heat until piping hot or in the microwave. You may need some stock or milk if it thickens up too much in the fridge.To Freeze: Freeze for 2-3 months in airtight containers in the freezer. Thaw in the refrigerator and then heat in the microwave or on the stove.Tip 1: This soup is a great one to have some variety with! Try adding extra veggies like carrots or celery or fruits like apples or pears!Tip 2: It helps to pulse the blender to get the vegetables going and then move to puree mode to finish.Tip 3: Make sure not to fill the blender too high. Blend in batches if necessary. If you have an immersion blender, that will work as well!