This honey-roasted parsnip soup is smooth, comforting and full of naturally sweet, roasted flavour. Finished with golden air fryer halloumi croutons and fresh parsley, it makes a lovely autumn lunch or a warming starter for a family dinner.
Roasting the parsnips brings out their sweetness, while a little honey helps them caramelise. The soup is then blended with softened onion, garlic and vegetable stock before Greek yoghurt is stirred through for a creamy finish.
Best of all, both the parsnips and halloumi can be cooked in the air fryer, leaving the hob free for the soup.
Recipe Details
- Servings: 4
- Preparation time: 15 minutes
- Cooking time: Approximately 45–55 minutes
- Total time: Approximately 1 hour to 1 hour 10 minutes
- Cooking method: Air fryer and hob
- Difficulty: Easy
Equipment
Ingredients
For the honey-roasted parsnip soup
- 1kg parsnips, peeled and cut into even-sized pieces
- 1 tbsp clear honey
- 2 tsp olive oil, divided
- 1 large onion, finely chopped
- 2 garlic cloves, crushed
- 1.2 litres hot reduced-salt vegetable stock, plus extra if needed
- 150g fat-free natural Greek yoghurt
- Freshly ground black pepper
- A small pinch of salt, if needed
For the air fryer halloumi croutons
- 90g reduced-fat vegetarian halloumi, cut into small cubes
- A little olive oil spray, if needed
To serve
- Freshly chopped parsley
- A little extra black pepper
How to Make Honey-Roasted Parsnip Soup
1. Prepare the parsnips
Peel the parsnips, remove any particularly woody cores from very large ones and cut them into similar-sized pieces.
Pat dry with kitchen paper, then transfer to a mixing bowl.
2. Season the parsnips
Add the honey and 1 teaspoon of olive oil. Season with freshly ground black pepper and toss until lightly coated.
If the honey is very thick, warm it briefly so it coats the vegetables more evenly.
3. Air fry the parsnips
Preheat the air fryer to 180°C, if required by your model.
Arrange the parsnips in the basket without overcrowding. Cook in two batches if necessary.
Air fry for approximately 20–28 minutes, shaking or turning halfway through, until tender and golden around the edges.
Check regularly towards the end because the honey can darken quickly.
4. Soften the onion and garlic
While the parsnips cook, heat the remaining teaspoon of olive oil in a large saucepan over a medium-low heat.
Add the onion and cook gently for approximately 8–10 minutes, stirring occasionally, until soft.
Add the crushed garlic and cook for another minute, taking care not to let it burn.
5. Simmer the soup
Add the roasted parsnips to the saucepan, followed by the hot vegetable stock.
Bring to a gentle simmer, cover loosely and cook for approximately 10 minutes so the flavours combine.
6. Blend until smooth
Remove the saucepan from the heat.
Blend the soup carefully with a hand blender until smooth and creamy. If using a jug blender, follow the manufacturer’s instructions for blending hot liquids and work in batches if necessary.
Add a little extra hot stock or water if the soup is thicker than you prefer.
7. Stir in the yoghurt
Allow the soup to cool slightly, then stir in the Greek yoghurt until combined.
Warm gently if needed, but avoid bringing the soup to a vigorous boil after adding the yoghurt, as it may split.
Taste and adjust the seasoning.
How to Make Air Fryer Halloumi Croutons
8. Prepare the halloumi
Pat the halloumi dry with kitchen paper and cut it into small, evenly sized cubes.
Lightly spray with oil if needed.
9. Air fry until golden
Set the air fryer to 190°C.
Arrange the halloumi cubes in a single layer and cook for approximately 6–9 minutes, shaking or turning carefully halfway through.
Remove them once golden around the edges. The exact time will depend on the size of the cubes and your air fryer model.
10. Serve the soup
Divide the warm soup between four bowls.
Top each serving with the freshly cooked halloumi croutons, chopped parsley and a little black pepper.
Serve immediately while the halloumi is warm and lightly crisp.
How to Make the Roasted Parsnips in the Oven
If you prefer to use your oven, preheat it to 200°C / 180°C fan / Gas Mark 6.
Spread the seasoned parsnips over a large non-stick baking tray and roast for approximately 30–40 minutes, turning halfway through, until tender and golden.
Continue with the saucepan and blending steps above.
Tips for the Best Parsnip Soup
Cut the parsnips evenly. Similar-sized pieces cook more consistently.
Avoid overcrowding the air fryer. Roast in batches if needed so the parsnips develop golden edges rather than steaming.
Watch the honey carefully. Honey can caramelise and burn quickly, especially towards the end of cooking.
Add stock gradually when blending. This makes it easier to adjust the soup’s consistency.
Stir the yoghurt in off the heat. This helps prevent curdling.
Cook the halloumi just before serving. It has the best texture while freshly cooked and warm.
Easy Flavour Variations
Honey and Thyme Parsnip Soup
Add 1 teaspoon of fresh thyme leaves to the parsnips before roasting.
Spiced Parsnip Soup
Stir ½ teaspoon of ground cumin into the onion and garlic for a gently warming flavour.
Apple and Parsnip Soup
Add one peeled, chopped apple to the saucepan before simmering for a slightly fruitier finish.
Vegetarian Cheese Topping
Use halloumi made with vegetarian rennet, checking the product label.
Without Honey
Leave out the honey and allow the natural sweetness of the roasted parsnips to come through.
What to Serve with Parsnip Soup
This soup works well as a light lunch with wholemeal bread or as a starter before a family roast.
For a more substantial meal, serve it with a sandwich or a simple salad on the side.
The halloumi adds a savoury contrast to the sweet parsnips, so only a small amount is needed as a topping.
Can You Make Parsnip Soup Ahead?
Yes. Prepare the soup in advance and store it separately from the halloumi.
For the best texture, cook the halloumi shortly before serving rather than leaving it in the soup, where it will soften.
How to Store and Reheat
Allow the soup to cool promptly, then transfer it to an airtight container and refrigerate at 5°C or below for up to 2 days.
Reheat gently in a saucepan, stirring regularly until piping hot throughout. Avoid prolonged boiling because the yoghurt may separate.
Reheat only once.
The soup can also be frozen, although the yoghurt may affect its texture after thawing. For a smoother result, freeze the soup before adding the yoghurt, then stir it in after reheating.
Store any cooked halloumi separately in the fridge and reheat thoroughly before serving.
Frequently Asked Questions
Can I make parsnip soup in an air fryer?
You can roast the parsnips in the air fryer, but the soup still needs to be simmered and blended separately. This method develops a lovely roasted flavour.
Do I need to boil the parsnips before air frying?
No. Cut them into even-sized pieces and roast them directly in the air fryer until tender.
Can I make the soup without honey?
Yes. Roasting brings out the parsnips’ natural sweetness, so the honey is optional.
Why did my yoghurt split in the soup?
Adding cold yoghurt to very hot soup or boiling it vigorously afterwards can cause it to separate. Allow the soup to cool slightly before stirring it in.
Can you cook halloumi in an air fryer?
Yes. Small halloumi cubes cook quickly in the air fryer and develop golden edges. Check them regularly to avoid overcooking.
Is this soup vegetarian?
It can be vegetarian when made with vegetable stock and halloumi produced using vegetarian rennet. Check the cheese label.
More Easy Autumn and Air Fryer Recipes
For another comforting homemade dish, try our Air Fryer Brussels Sprouts with garlic and smoked paprika.
Our Air Fryer Yorkshire Pudding Recipe is another lovely addition to a traditional family roast.
You can also explore our Budget Family Meals UK guide for affordable everyday cooking inspiration.
A Comforting Autumn Favourite
With sweet roasted parsnips, creamy Greek yoghurt and golden halloumi croutons, this honey-roasted parsnip soup brings simple ingredients together in a warming, flavourful meal. It is equally lovely as a light lunch or an autumn dinner starter.
Allergen note: Contains milk from the Greek yoghurt and halloumi. Check the vegetable stock and other packaged ingredients.