Easy Creamy Roasted Cauliflower Soup Recipe
This creamy roasted cauliflower soup gets most of its flavor from caramelized vegetables, so it tastes rich even with just a small amount of cream, or none at all.
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Some soups take all afternoon to build real flavor. This one gets there in under an hour, and the trick is roasting the vegetables first. A hot oven turns plain cauliflower, onion, and garlic golden and caramelized, and that caramelization is where all the rich, cozy flavor in this creamy roasted cauliflower soup recipe comes from. Blend it up, stir in a splash of cream, and dinner is ready.
Why I love this Roasted Cauliflower Soup
I make this soup on repeat once the weather turns cool. The roasting step takes a little patience, but it does most of the work for you: minimal chopping, one pan, and a soup that tastes like it simmered all day. I love that it comes together with pantry staples I almost always have on hand, and that it’s just as good with a splash of cream as it is without one. It reheats well for lunch the next day too, which makes it one of my go-to soups for meal prep.
What makes this Roasted Cauliflower Soup healthy?
Cauliflower is the star here, and it brings plenty to the bowl: fiber, vitamin C, vitamin K, and a good dose of antioxidants, all for very few calories. Roasting the vegetables instead of boiling them keeps more of their natural sweetness and nutrients intact, and this soup gets most of its creamy texture from the blended vegetables rather than a big pour of heavy cream. That makes this healthy roasted cauliflower soup a lighter option than a lot of classic cream-based soups, and it’s easy to keep dairy-free by skipping the cream altogether.
RELATED: Easy Homemade Cream of Asparagus Soup – another blended veggie soup that turns a short ingredient list into something silky and comforting, perfect for anyone just getting comfortable making soup from scratch.
Ingredients for Roasted Cauliflower Soup Recipe
- Cauliflower – roasting turns it golden and brings out a natural sweetness that’s the base of the soup’s flavor
- Yellow onion – adds savory depth and a little sweetness once it caramelizes
- Garlic cloves – roasted whole, they turn mellow and slightly sweet
- Olive oil – helps everything caramelize evenly in the oven
- Kosher salt and black pepper – for seasoning at every stage of the soup
- Vegetable broth or chicken broth – the base of the soup; use vegetable broth to keep it vegetarian
- Dried or fresh thyme – a warm, earthy herb that pairs naturally with roasted cauliflower
- Smoked paprika – optional, but it adds a subtle smoky note
- Heavy cream or whole milk – optional, for extra richness and a silky finish
- Lemon juice – brightens the whole pot right before serving
- Green onions, croutons, and Parmesan cheese – optional garnishes for topping and crunch
Soup making essentials
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ALLIGATOR CHOPPER
Immersion Blender
Dutch oven
2 Cup Freezer Trays
Soup Ladle
MASON JARS
Step-by-step instructions for making Roasted Cauliflower Soup
- Preheat the oven to 425°F.
- Toss the cauliflower, onion, and garlic with olive oil, salt, and pepper, then spread them in a single layer on a baking sheet.
- Roast for 30 to 35 minutes, stirring halfway through, until the cauliflower is tender and golden brown around the edges.
- Transfer the roasted vegetables to a large pot and add the broth, thyme, and smoked paprika.
- Bring the soup to a gentle simmer and cook for 10 minutes to let the flavors come together.
- Puree the soup until smooth with an immersion blender, or carefully blend it in batches using a countertop blender.
- Stir in the cream and lemon juice, then taste and adjust the seasoning.
- Warm the soup over low heat until heated through, but don’t let it boil.
- Serve topped with your favorite garnishes.
Make this Roasted Cauliflower Soup, then check out my Creamy Carrot Soup, my Butternut Squash Soup or more of my Easy Soup Ideas.
TIPS AND FREQUENTLY ASKED QUESTIONS about this Roasted Cauliflower Soup
Read on for tips and substitution ideas and how to customize this soup.
Can I make this soup without cream?
Yes. The roasted cauliflower blends into a naturally thick, creamy soup on its own, so the cream is optional. Skip it, or swap in a splash of milk, coconut milk, or an extra drizzle of olive oil for richness.
What’s the best broth to use in this recipe?
Vegetable broth keeps this soup vegetarian, and chicken broth adds a little more savory depth. Either one works well, so use whichever you have on hand.
Can I freeze roasted cauliflower soup?
Yes. Let the soup cool completely, then freeze it in an airtight, freezer-safe container for up to 2 to 3 months. Thaw it overnight in the fridge and reheat gently on the stove.
How do I store leftovers?
Store leftover soup in an airtight container in the fridge for up to 4 days. Reheat it gently on the stove or in the microwave, adding a splash of broth if it has thickened up.
Can I use frozen cauliflower instead of fresh?
You can, though it won’t caramelize quite the same way fresh cauliflower does. Roast it a few extra minutes and keep an eye out for browning around the edges.
What can I use instead of an immersion blender?
A countertop blender works well too. Blend the hot soup in small batches, and leave the lid vented so steam can escape safely.
This roasted cauliflower soup is the kind of recipe worth keeping on hand all season: easy enough for a weeknight, and good enough to serve to guests. Save this recipe to your favorite soups board on Pinterest so it’s ready the next time you need something warm and comforting.
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Roasted Cauliflower Soup Recipe
Equipment You’ll Need
- Baking sheet
Ingredients
- 1 large head cauliflower, cut into florets
- 1 large yellow onion, cut into wedges
- 6 garlic cloves, peeled
- 2 tbsp olive oil
- 1 tsp kosher salt (plus more to taste)
- 1/2 tsp black pepper
- 4 cup vegetable broth or chicken broth
- 1/2 tsp dried thyme (or 1 teaspoon fresh thyme)
- 1/4 tsp smoked paprika (optional)
- 1/2 cup heavy cream or whole milk (optional)
- 1 tbsp lemon juice
Optional Garnishes
- sliced green onions
- croutons
- freshly grated Parmesan cheese
Instructions
- Preheat the oven to 425°F.
- Toss the cauliflower, onion, and garlic with olive oil, salt, and pepper. Spread the vegetables on a baking sheet in a single layer.
- Roast for 30-35 minutes, stirring halfway through, until the cauliflower is tender and golden brown around the edges.
- Transfer the roasted vegetables to a large pot. Add the broth, thyme, and smoked paprika.
- Bring the soup to a gentle simmer and cook for 10 minutes to allow the flavors to blend.
- Use an immersion blender to puree the soup until smooth. You can also carefully blend the soup in batches using a countertop blender.
- Stir in the cream and lemon juice. Taste and adjust the seasonings as needed.
- Warm the soup over low heat until heated through, but do not boil.
- Serve topped with your favorite garnishes.
Nutrition
Disclosure
Recipes and photos are for your personal enjoyment only — please share the love by linking, not copying!Other Soup recipes to try
- Easy Homemade Cream of Asparagus Soup – a silky, blended soup that’s just as comforting as this one, and just as simple to make.
- Easy Italian Minestrone Soup – a hearty, vegetable-packed soup that’s a full meal in a bowl.
- Beef and Barley Soup – a filling, savory soup loaded with tender barley and ground beef.
- Easy One-pot Vegetable Soup – a 20-minute weeknight soup made with pantry staples.
- Easy Vegan Spring Minestrone Soup – a lighter, veggie-forward soup that celebrates spring produce.
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This worked exactly as written, thanks!