The Best Creamy Roasted Root Vegetable Soup with Roasted Garlic

This roasted root vegetable soup is a creamy, golden bowl made with oven-roasted carrots, parsnips, leek, turnip and a whole head of soft, sweet garlic. Ready in under an hour, this easy roasted root vegetable soup recipe turns simple winter veg into a velvety, deeply caramelised bowl with proper restaurant-quality flavour.

Roasting the veg first is what makes this soup so special. The carrots, parsnips and onions go golden brown at the edges, their natural sugars caramelise, and the flavour goes from plain to deeply savoury and sweet. The roasted garlic melts in and adds a soft, mellow background note that pulls everything together.

It's a homemade soup made with one tray and one pot, and the result tastes like something from a really good country pub. A swirl of cream, a handful of crunchy croutons on top, and lunch is sorted.

Ingredients for the Best Roasted Root Vegetable Soup

• Carrots — they bring natural sweetness and that lovely warm orange colour. When roasted, they go soft and sticky at the edges.
• Parsnips — the heart of this soup. Roasted parsnips have a nutty, almost honeyed flavour you can't get any other way.
• Turnip — adds a gentle peppery note and bulks the soup out without overpowering the sweeter veg.
• Yellow onions — roasted in wedges, they go meltingly soft and add a rich, savoury depth.
• Leek — the white parts give a mild, sweet onion flavour that's a bit more delicate than regular onion.
• Whole garlic head — roasting the whole bulb in foil turns sharp raw garlic into something soft, sweet and spreadable. This is the small detail that makes the soup taste properly special.
• Olive oil — helps the veg roast properly and gets those edges nicely caramelised.
• Sea salt and cracked black pepper — simple seasoning. Most of the flavour comes from the roasting.
• Chicken stock — thins the blended veg into a soup. Homemade is best, but a good stock cube dissolved in hot water works perfectly fine.
• Double cream — stirred in at the end for richness and a silky finish.
• Croutons — for serving. They give the crunch this soft, velvety soup needs.

How to Make Roasted Root Vegetable Soup Step by Step

1. Step 1: Wash and peel the carrots and parsnips, then chop them into 1–2 cm pieces. Peel the onions and cut into small wedges. Peel the turnip and cube it. Wash the leek carefully (grit hides in the layers), trim it, and slice the white parts into 2 cm rounds. Slice the top off the garlic head so the cloves are just exposed, drizzle with a little olive oil, and wrap it loosely in foil.

2. Step 2: Pre-heat the oven to 200°C (400°F). Tip all the prepared veg onto a large baking tray, drizzle with olive oil, season with sea salt and black pepper, and toss to coat. Tuck the foil-wrapped garlic in the middle of the tray. Roast for 30 minutes, stirring once or twice, until everything is fork-tender and the edges are golden brown. Check with a fork — the pieces should give easily.

3. Step 3: Tip the roasted veg into a large pot or food processor bowl. Squeeze the soft roasted garlic out of its skin and add it in. Pour the chicken stock in gradually and blend with an immersion blender (or in the food processor) until smooth. Add more or less stock depending on how thick or thin you want your soup.

4. Step 4: Gently warm the soup in the pot over a low heat. Stir in the double cream, taste, and adjust the salt and pepper. Ladle into bowls and finish with croutons, an extra swirl of cream and a good crack of black pepper.

How to Serve and Store Roasted Root Vegetable Soup

This roasted root vegetable soup is at its best served straight from the pot, properly hot, with crunchy croutons on top, a fresh swirl of double cream and a final crack of black pepper. For a fuller meal, I serve it with thick slices of crusty sourdough, a warm baguette torn into the bowl, or a cheese on toast on the side. A simple green salad with a sharp dressing also works well next to it to cut the richness.

To store, let the soup cool completely, then keep it in an airtight container in the fridge for up to 4 days. Reheat gently on the hob over a low heat, stirring now and then to stop the cream splitting. For longer storage, freeze the roasted root vegetable soup before you add the cream — it'll keep beautifully for up to 3 months. Defrost overnight in the fridge, reheat gently, and stir the cream in just before serving for the best texture.

How Much Does Roasted Root Vegetable Soup Cost Around the World?

One of the things I love most about this roasted root vegetable soup is how cheap it is to make. Root veg are some of the most affordable ingredients you can buy in pretty much any country, and a single recipe feeds four people generously for very little.

• In the UK, you can pick up the lot — carrots, parsnips, turnip, leek, onions and garlic — for around £3–£4 at Tesco, Sainsbury's, Asda or your local greengrocer.
• In Ireland, expect around €3.50–€4.50 at Dunnes Stores, SuperValu, Tesco or Lidl.
• The USA is a bit pricier, mainly because parsnips can run $3–$5 per pound at Whole Foods, Kroger or Trader Joe's, so a full pot will cost around $7–$9.
• In Australia, root veg are seasonal but cheap in autumn and winter — figure around AUD $9–$11 at Woolworths, Coles or ALDI.
• In Canada, you're looking at roughly CAD $6–$8 at Loblaws, Sobeys, Metro or No Frills.

Either way, this homemade roasted root vegetable soup is one of the best-value comfort meals you can put on the table.

More Cosy Soup Recipes to Try

Top Tips and Notes for the Best Roasted Root Vegetable Soup

• Cut all the veg roughly the same size. The most important thing for an even-textured roasted root vegetable soup is consistent veg sizes. If your turnip is in big chunks and your carrots in tiny dice, they'll cook at different rates. Aim for pieces around 1–2 cm so they all roast in the same 30 minutes and reach fork-tender at the same time. Smaller pieces also caramelise better, which is exactly what gives this soup its deep, golden flavour.
• Don't skip the roasted garlic. A whole roasted garlic head is what lifts this from a standard veg soup to something really special. Roasting tames the sharpness of raw garlic and turns it into a soft, sweet, almost buttery paste. Just slice off the top of the bulb, drizzle with oil, wrap in foil, and roast alongside the veg. When it's done, squeeze the cloves out from the bottom straight into your soup pot — no fiddly peeling needed.
• Use a large baking tray, not a small one. If you crowd the veg onto too small a tray, they'll steam instead of roast. You'll end up with pale, watery veg and almost no caramelisation. Use the biggest baking tray you have, or split everything across two trays. You want the pieces in a single layer with a bit of breathing room so the dry oven heat can hit each one and get them properly golden.
• Stir the veg halfway through roasting. Give the tray a quick stir at the 15-minute mark. The pieces touching the tray pick up the most colour, so turning them helps everything brown evenly. This also stops the bits at the edges of the tray from catching while the middle pieces stay pale. A quick toss with a spatula is all it takes, and the difference in the final flavour is noticeable.
• Roasted parsnips do most of the heavy lifting here. Parsnips are the secret weapon in any creamy roasted root vegetable soup. When they roast, their starches turn to sugar and they develop that lovely nutty, slightly toasted flavour. Don't skimp on them — three medium parsnips is the minimum, and you can go up to four for a sweeter, more parsnip-forward soup. Look for firm, unblemished parsnips at the shop, and avoid any that feel rubbery or soft.
• Blend in batches if using a food processor. An immersion blender is the easier option — you just blitz everything straight in the pot. If you only have a regular blender or food processor, work in batches and never fill it more than halfway. Hot liquid expands fast and can blow the lid off if the jug is too full. Hold the lid down with a folded tea towel as an extra precaution, and let any steam escape between batches.
• Add the stock gradually for the right consistency. Don't dump all the stock in at once. Start with about two-thirds, blend, and then add more until the texture is exactly how you like it. Some people want a thick, almost stew-like soup; others prefer it pourable. The beauty of this roasted root vegetable soup is that you control the consistency entirely at the blending stage, so it's worth taking your time.
• . Stir the cream in off the heat, or at very low heat. Double cream can split if it gets too hot, especially if the soup is at a rolling boil when you add it. Take the pot off direct heat for a minute, then stir the cream in gently with a wooden spoon. If you want a dairy-free version, full-fat coconut milk or oat cream gives a similar silky finish. Always reheat leftovers gently to keep the cream from separating.

Roasted Root Vegetable Soup FAQ

Related

Looking for other recipes like this? Try these:

Pairing

These are my favorite dishes to serve with roasted root vegetable soup:

Continue to Content

Yield: 4

Creamy Roasted Root Vegetable Soup with Roasted Garlic

Print

Roasted root vegetable soup is a creamy, golden bowl made with oven-roasted carrots, parsnips, leek, turnip and a whole head of roasted garlic, blended smooth with chicken stock and finished with double cream. It's a budget-friendly, family-favourite autumn and winter recipe with deep, caramelised flavour and a silky, velvety texture.

Prep Time 15 minutes

Cook Time 35 minutes

Total Time 50 minutes

Ingredients

• 3 medium carrots
• 3 medium parsnips
• 1 whole garlic head
• 1 leek, white part only
• 2 medium yellow onions
• 1 medium turnip
• 2 tablespoon olive oil
• 1 teaspoon sea salt, or to taste
• ½ teaspoon black pepper, or to taste
• 1 litre chicken stock (4 cups)
• 4 tablespoon double cream (heavy cream)
• Croutons, to serve
• Extra double cream and cracked black pepper, to serve

Instructions

1. Pre-heat the oven to 200°C (400°F). Wash and peel the carrots and parsnips, then cut them into 1–2 cm pieces. Peel the onions and cut into small wedges. Peel the turnip and cube it. Wash the leek carefully, trim, and slice the white part into 2 cm rounds. Slice the top off the garlic head to expose the cloves, drizzle with a little olive oil, and wrap loosely in foil.
2. Tip all the prepared veg onto a large baking tray. Drizzle with olive oil, season with sea salt and black pepper, and toss to coat. Tuck the foil-wrapped garlic in the middle of the tray. Roast for 30 minutes, stirring once or twice, until the veg are fork-tender and the edges are golden brown.
3. Transfer the roasted veg into a large pot or food processor bowl. Squeeze the soft roasted garlic out of its skin and add it in. Pour the chicken stock in gradually and blend with an immersion blender (or food processor) until completely smooth. Add more or less stock to reach the consistency you prefer.
4. Place the pot over a low heat and gently warm the soup through. Stir in the double cream, taste, and adjust the salt and pepper. Ladle into bowls and finish with croutons, a swirl of extra cream and a crack of black pepper.

Notes

For best caramelisation, use a large baking tray so the veg are in a single layer with space to breathe. Crowded veg steam rather than roast.

The roasted garlic is essential here — don't skip it. Slice off the top of the bulb, drizzle with oil, wrap in foil and roast alongside the veg for the full 30 minutes.

To make this vegetarian, swap the chicken stock for a good vegetable stock. For dairy-free, use full-fat coconut milk or oat cream in place of double cream.

Add the stock gradually when blending — start with less and add more to reach your preferred consistency. Too much at the start and you can't take it back.

Freeze in portions before adding the cream. Defrost in the fridge overnight, reheat gently on the hob, and stir cream in just before serving for the best texture.