Creamy deliciousness without a drop of cream! This 5-Onion Soup with Garlic Croutons is versatile enough to shine as a first course or pair perfectly with a sandwich or salad for a cozy lunch. Want to level up? Serve it with a swoon-worthy grilled cheese for a dreamy light supper. With its luscious texture and rich flavor, you’d never guess it’s cream-free—and it’s easy to tweak for vegetarian or gluten-free diets too!
Why You’ll Love This Creamy Onion Soup
Creamy without the cream
The potato blends into the soup, creating a silky texture without adding cream.
Big flavor from simple ingredients
Slow-cooked onions, leeks, shallots, garlic, and a splash of sherry create deep, rich flavor with very little fuss.
Easy to make
No careful knife work needed here. Everything gets cooked down and blended smooth.
Garlic croutons make it special
Crispy homemade garlic croutons add texture and bring that classic soup-and-bread comfort factor.
Perfect as a starter or light meal
Serve it on its own or pair it with a salad, sandwich, or grilled cheese for an easy, cozy dinner.
Jump to:
- No Cream Creamy 5-Onion Soup with Garlic Croutons Recipe
- Ingredients and Why They Matter
- Why the Onions Matter…or Don’t
- How to Prepare Leeks and Shallots
- Step by Step Instructions
- Tips for Blending Hot Liquids
- Why Fresh Croutons Are Worth It
- FAQs
- Storage
- Wine and Mocktail Pairings
- Wine Recommendations
- Mocktail Pairing: Sparkling Apple Thyme Spritz
No Cream Creamy 5-Onion Soup with Garlic Croutons Recipe
Ingredients
For the Soup
- ¼ cup unsalted butter or combination of extra virgin olive oil and butter
- 1 large leek well cleaned, white and pale part only, chopped (about 1 ½ cups)
- 1 yellow onion chopped
- 1 red onion chopped
- 3 green onions chopped
- 2 shallots chopped (about ½ cup)
- 2 stalks celery chopped
- 1 clove garlic minced
- ½ cup dry sherry, white vermouth,, or dry white wine optional
- 1 medium russet potato, peeled and diced
- 6 cups chicken broth or vegetable stock
- salt and freshly ground pepper to taste
- chopped chives, for garnish optional
For the Garlic Croutons
- 1 ½ cups cubed bread whatever you want to use, but I find a denser French or Italian sliced bread to be better than Wonder bread
- 1 tablespoon olive oil
- 1 tablespoon unsalted butter
- 1 clove garlic thinly sliced
- Salt & pepper to taste
Instructions
Cook the vegetables
- Melt the butter and oil in a large Dutch oven over medium-low heat.Add the leeks, onions, green onions, shallots, celery, and garlic. Cook gently for about 8 minutes, stirring occasionally, until softened and translucent.
Build the soup
- Add the sherry or white wine, if using, and simmer until mostly evaporated.Add the diced potato and broth. Bring to a simmer and cook for about 20 minutes, or until the potato is very tender. Remove from heat and allow to cool slightly before blending.
Blend until creamy
- Carefully puree the soup using a blender or immersion blender until smooth and creamy.Taste and season with salt and pepper.
Make the garlic croutons
- Heat the oven to 350°F (176ºC).In a sauté pan, melt the butter with the olive oil. Add the garlic and bread cubes and toss to coat.Transfer to the oven and bake for 5 to 7 minutes, or until crisp and golden.
Finish and serve
- Return the soup to a gentle simmer, thinning with additional stock if desired.Ladle into warm bowls and top with garlic croutons and chopped chives, if using.
Notes
- A standard blender gives the creamiest texture, but an immersion blender works well too.
- Blend hot liquids carefully and never overfill the blender.
- This soup tastes even better the next day.
Make It Your Way
- Use vegetable stock and olive oil for a vegetarian or vegan version.
- Use gluten-free bread for gluten-free croutons.
- Add extra broth for a thinner soup or keep it thick and rustic.
Nutrition
Ingredients and Why They Matter
Onions
Using a mix of onions adds depth and complexity, but don’t overthink it. Use what you have.
Leeks
Leeks add a delicate, mellow onion flavor that gives the soup a softer, more rounded taste.
Shallots
Shallots bring both mild onion flavor and a subtle garlic note that blends beautifully into the soup.
Celery
Adds balance and savory depth without standing out on its own.
Russet Potato
The potato is what creates the creamy texture once blended, without needing cream.
Dense Bread
A sturdy bread makes the best croutons because it crisps well without falling apart.
Why the Onions Matter…or Don’t
This soup came together one Sunday night when I happened to have a few different onions sitting around and needed a first course for dinner.
Turns out, once onions are cooked down together, the differences become much more subtle than people think.
Raw onions each have their own personality. Red onions are milder, sweet onions are sweeter, and yellow onions have a deeper, earthier flavor. But after sautéing and simmering, they mellow and blend beautifully together.
So don’t stress too much about exact onion varieties here. Use what you have and focus more on the overall quantity than the exact type.
The leeks and shallots, however, do bring distinct flavors that are worth including if possible.
How to Prepare Leeks and Shallots
Leeks
Leeks grow in sandy soil, so dirt often hides between their layers. For this recipe, use only the white and light green portions.
Trim off the dark green tops and root end, then slice the leeks and rinse them well under cold water, separating the layers with your fingers to remove any trapped grit.
The dark green tops can be saved for homemade stock.
Shallots
Shallot skins can be stubborn. A quick smash with the flat side of a knife, just like garlic, loosens the skin and makes peeling much easier.
And if a tiny bit of shallot skin sneaks into the soup? Don’t panic. It all gets blended anyway.
Step by Step Instructions
Melt the butter in a large Dutch oven or heavy-bottomed soup pot over medium-low heat.
Add the onions, leeks, shallots, celery, garlic, and a pinch of salt. Cook slowly, stirring occasionally, until the vegetables soften and the onions become translucent and silky, about 8 minutes.
Add the sherry or white wine, if using, and continue cooking until the liquid is mostly evaporated.
Add the diced potato and stir to combine.
Pour in the stock and bring the soup to a gentle simmer. Cook over medium heat until the potatoes and vegetables are very tender, about 20 minutes.
Turn off the heat and allow the soup to cool slightly before blending.
Once the soup has cooled for about 15 to 20 minutes, blend until smooth and creamy using either a standard blender or immersion blender.
Tips for Blending Hot Liquids
Blending hot soup takes a little care, but these simple tips make it easy and safe.
Allow the soup to cool slightly
Hot liquids create steam pressure quickly. Letting the soup rest for a few minutes before blending helps prevent splattering.
Blend in batches
Do not overfill the blender. Filling it no more than halfway is safest.
Vent the lid
Leave the center cap off or slightly loosen the lid and cover with a folded towel so steam can escape safely.
Start slowly
Pulse a few times first before blending fully smooth.
Adjust the texture if needed
If the soup feels too thick, blend in a little warm broth or water until it reaches the consistency you like.
Immersion blenders work well too
An immersion blender is convenient and less messy, but for the smoothest, creamiest texture, a standard blender usually gives the best results.
Clean the blender promptly
Creamy soups can stick as they cool, so rinsing the blender right away makes cleanup much easier.
Why Fresh Croutons Are Worth It
There’s something about homemade croutons that store-bought ones just can’t match. Crisp edges, a slightly chewy center, buttery garlic flavor… they turn a simple soup into something special.
And honestly? They’re incredibly easy to make.
French bread, Italian bread, sourdough, or whatever sturdy leftover bread you have on hand all work beautifully. The key is combining a quick sauté in butter and olive oil with a gentle oven bake.
That two-step process creates croutons with crisp golden edges while keeping the centers just slightly tender instead of rock hard.
For the best texture, bake them just until golden, then turn off the oven and let them sit for a few minutes in the residual heat. That little extra rest gives you croutons with the perfect balance of crunch and chew.
Fresh croutons may seem like a small thing, but in a simple soup like this, they make a big difference.
Low and slow is the way to go. Don't burn the garlic, burnt garlic is bitter
FAQs
Yes. The potato creates the creamy texture naturally, but there are other options if preferred.
Flour Roux
Melt 2 tablespoons butter or oil in a small pan. Stir in 2 tablespoons flour and cook for 1 to 2 minutes to remove the raw flour taste. Whisk in a ladle of hot soup until smooth, then stir the mixture back into the soup and simmer a few minutes until thickened.
Cornstarch Slurry
Mix 1 to 2 tablespoons cornstarch with an equal amount of cold water until smooth. Stir into the simmering soup and cook for 2 to 3 minutes until slightly thickened.
Both methods help create a velvety texture without significantly changing the flavor.
Absolutely.
For a vegetarian version
Use vegetable stock instead of chicken broth.
For a vegan version
Replace the butter with olive oil or vegan butter and use vegetable stock. For the croutons, use olive oil in place of butter.
The rest of the ingredients are naturally plant-based.
Yes, and the flavor actually improves after a day in the refrigerator.
Store the soup covered for up to 3 to 4 days. When reheating, add a little extra stock or water if needed to loosen the texture.
The croutons can also be made ahead, though a quick warm-up in the oven helps bring back their crisp texture before serving.
Storage
Allow the soup to cool completely before transferring it to an airtight container. Store in the refrigerator for up to 4 to 5 days.
This soup also freezes beautifully. Once cooled, transfer it to freezer-safe containers or freezer bags and freeze for up to 3 months.
To reheat, thaw overnight in the refrigerator if frozen, then warm gently on the stovetop. If the soup thickens too much during storage, simply add a little extra broth or water while reheating.
Store the croutons separately to keep them crisp. A quick few minutes in the oven will refresh them beautifully before serving.
Wine and Mocktail Pairings
For this creamy onion soup, the key pairing factors are sweet, slow-cooked onions, silky texture, savory depth, and buttery garlic croutons. The best pairings bring freshness and acidity to balance the richness without overwhelming the delicate flavors.
Wine Recommendations
Chardonnay (Unoaked or Lightly Oaked)
Probably the most natural pairing here.
Why it works
- The wine’s soft texture complements the soup beautifully.
- Bright acidity keeps the soup from feeling heavy
- Gentle apple and pear notes complement the sweet onions
Look for a restrained California, Oregon, or French Chardonnay rather than anything heavily oaked.
Viognier
A lovely choice if you want something a little more aromatic.
Why it works
- Soft stone fruit notes pair beautifully with sweet onions
- Rich texture works with the soup’s silky consistency
- Floral notes add elegance without overpowering
Dry Chenin Blanc
Bright, fresh, and surprisingly versatile with onion-based soups.
Why it works
- Acidity balances the buttery croutons
- Subtle honeyed notes complement caramelized onion flavors
- Keeps the soup feeling lively and light
A Loire Valley Chenin Blanc would be especially nice here.
Mocktail Pairing: Sparkling Apple Thyme Spritz
This soup really benefits from something fresh and lightly acidic alongside it.
Why it works
- Apple echoes the sweetness of the onions
- Thyme complements the savory herbal flavors
- Bubbles refresh the palate between bites
Quick Build
- Cloudy apple juice or fresh apple cider
- Sparkling water
- Small squeeze of lemon
- Fresh thyme sprig
- Ice
Light, savory-friendly, and elegant enough for a first course.
Quick Rule of Thumb
For creamy onion soups, your pairing should:
- Bring brightness and acidity
- Complement sweet onion flavors
- Avoid heavy tannins or aggressive oak
- Stay light enough to let the soup remain the focus
Fresh, balanced, and slightly aromatic almost always works best here. 🥣🍷
This recipe was originally published in 2014 and has since been updated for clearer, more concise instructions to better guide you through the process.
BB says
crouton size was perfect....the soup was creamy good and quite flavorful. Pair with a viognier or CA Sav Blanc with good fruit component
Chris G says
I'll want to try this for sure! Sounds delicious, and I didn't realize that Leeks were in the onion family, so I learned something too. Heather's not fond of onions, so I wonder if she'll even try it. Also, love the watermarking... good stuff all around 🙂