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Roasted Corn & Cauliflower Soup

Written by Shikha   |   Last updated: September 10, 2026

Colder weather will be here soon, so it’s time to start thinking about soup as a main course for weeknight dinners! This roasted corn & cauliflower soup is vegan, plant-based, gluten-free, and easy to prepare from scratch. There are four main ingredients — kernels from four or five ears of corn, a head of cauliflower, coconut milk, and vegetable broth — and I like to add some balsamic vinegar, olive oil, onion powder, garlic powder, Italian seasoning, salt, and pepper when roasting the vegetables.

I’ve been asked why I roast the vegetables before adding them to the blender, and there are 3 main reasons for this:

  1. Roasting the corn and cauliflower caramelizes them so that the vegetables take on a rich brown color. Water leaves the cauliflower and corn as steam, which helps intensify the nutty flavor of the cauliflower and the sweet flavor of the corn.
  2. I can be doing something else while the vegetables are roasting in the oven — setting the table, making a salad, or creating a new vegan dessert!
  3. Cleanup is a breeze because I roast the vegetables on a baking sheet lined with parchment paper, and when the roasting process is complete all I have to do is tip the baking sheet over the blender — the veggies go into the blender, the parchment paper goes into the garbage can! (Note: I love to serve this soup with a nice warm kale dish like my Kale & Pine Nut Stir Fry.)

 

Roasted Corn & Cauliflower Soup

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Colder weather will be here soon, so it’s time to start thinking about soup as a main course for weeknight dinners! This soup is vegan, plant-based, gluten-free, and easy to prepare from scratch. There are four main ingredients — kernels from four or five ears of corn, a head of cauliflower, coconut milk, and vegetable broth — and I like to add some balsamic vinegar, olive oil, onion powder, garlic powder, Italian seasoning, salt, and pepper when roasting the vegetables. I've been asked why I roast the vegetables before adding them to the blender, and there are 3 main reasons for this: 1) Roasting the corn and cauliflower caramelizes them so that the vegetables take on a rich brown color. Water leaves the cauliflower and corn as steam, which helps intensify the nutty flavor of the cauliflower and the sweet flavor of the corn. 2) I can be doing something else while the vegetables are roasting in the oven — setting the table, making a salad, or creating a new vegan dessert! 3) Cleanup is a breeze because I roast the vegetables on a baking sheet lined with parchment paper, and when the roasting process is complete all I have to do is tip the baking sheet over the blender — the veggies go into the blender, the parchment paper goes into the garbage can! (Note: I love to serve this soup with a nice warm kale dish like my Kale & Pine Nut Stir Fry.)
Servings: 8
Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes

Ingredients 

  • 4-5 cobs of corn, (husked, kernels removed)
  • 1 head cauliflower, (cut into bite-sized florets)
  • 2 tablespoons olive oil
  • 2 tablespoons balsamic vinegar
  • 1 teaspoon Italian seasoning
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • Salt and pepper, (to taste)
  • 1 (14oz) can full-fat coconut milk, (room temperature)
  • 2 cups vegetable broth, (+ more for thinning)
  • Parsley, (chopped, for garnish)

Instructions 

  • Preheat the oven to 400 degrees F and line a baking sheet with parchment paper.
  • Place the corn kernels and cauliflower florets on a baking sheet and toss with oil, balsamic vinegar, Italian seasoning, garlic powder, onion powder, salt, and pepper. Roast the mixture for 30 minutes.
  • Once the corn and cauliflower are done roasting, add half the mixture to a blender along with half of a can of coconut milk (shaking can well first) and 1 cup vegetable broth. Blend until smooth and transfer to the pot. Repeat with the second half of the mixture.
  • Pour the soup into a large pot and heat through, adding more broth if needed to thin it out further.
  • Garnish with parsley.

BON APPÉTIT!

    Nutrition

    Calories: 1470kcalCarbohydrates: 26gProtein: 16gFat: 157gSaturated Fat: 136gPolyunsaturated Fat: 2gMonounsaturated Fat: 9gSodium: 351mgPotassium: 1809mgFiber: 2gSugar: 3gVitamin A: 173IUVitamin C: 43mgCalcium: 152mgIron: 24mg

    FAQ

    Do corn and cauliflower go together?

    Yes, the sweetness of fresh corn and the earthiness of cauliflower goes well together as they contrast each other in flavor. Roasting brings out the natural sweetness in both and caramelizes them to a wonderful golden color. It also amplifies the nutty taste of the cauliflower

    What makes cauliflower soup taste better?

    Cauliflower tastes the best when you roast the cauliflower before blending, and add flavorful ingredients to add depth. In this case, balsamic vinegar adds a deep tasting tanginess while the Italian seasonings adds some herbaceous notes.

    Can I make cauliflower soup with corn?

    Yes, in fact, this soup recipe is built around that pairing. While fresh corn and cauliflower work the best in the soup, you can replace them with frozen corn and cauliflower in a pinch instead.

    What’s the secret to flavorful corn soup?

    The secret to a flavorful corn soup, or any vegetable based soup for that matter, is roasting the vegetables rather than boiling them. Roasting corn helps it caramelize while enhancing its natural sweetness, adding a depth of flavor to soup.

    Shikha - Veggiecurean founder and recipe creator
    Shikha

    Shikha, creator of Veggiecurean, develops accessible vegetarian and vegan recipes with global influences. With training from the Institute for Integrative Nutrition and culinary schools, she combines technical expertise with practical plant-based cooking. Every recipe is thoroughly tested in her home kitchen to ensure success for home cooks.

    Nutrition Disclaimer

    Nutrition information is an estimate provided as a courtesy and may vary depending on ingredients used. This content is not intended as medical or dietary advice.