How do I keep this recipe from turning soggy?

Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.

Can I adjust the seasoning?

Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.

How do I know the head cauliflower is done?

Use the visual cues in the instructions first: the outside should be browned or crisp and the center should be hot and tender. For meat or seafood, confirm doneness with a food thermometer.

Back to Recipes

Sides

Air Fryer Roasted Cauliflower and Sweet Potato Soup

Name: Air Fryer Roasted Cauliflower and Sweet Potato Soup
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 4 servings
Cuisine: American
Ingredients: 1 medium head cauliflower, cut into florets; 2 medium sweet potatoes, peeled and cubed into 1-inch pieces; 1 tablespoon olive oil; 1 teaspoon garlic powder; 1 teaspoon smoked paprika; Salt and freshly ground black pepper, to taste; 1 medium yellow onion, chopped; 3 cloves garlic, minced; 4 cups vegetable broth (low sodium preferred); 1 teaspoon dried thyme; 1/2 teaspoon ground cumin; 1/4 teaspoon ground nutmeg; 1 tablespoon fresh lemon juice; Optional garnish:; chopped fresh parsley, roasted pumpkin seeds

By Airfryfeast Test KitchenReviewed by Airfryfeast Editorial TeamPublished Apr 14, 2026 · Updated Jun 16, 2026

American 40 mins air-fryer-friendlyvegetarianveganhealthygluten-freedairy-freeeasycrispcomfort-foodone-potmeal-prepfreezer-friendlyweeknight-dinnerv2

This creamy, roasted cauliflower and sweet potato soup uses the air fryer to create rich, caramelized vegetables blended into a smooth, dairy-free, vegan side dish. Perfect for healthy meal prep, freezer-friendly storage, and quick, comforting weeknight dinners.

Air Fryer Roasted Cauliflower and Sweet Potato Soup

Prep 15 min

Cook 25 min

Total 40 min

Servings 4

Difficulty easy

Cuisine American

Ingredients

Servings 4

1 medium head cauliflower, cut into florets
2 medium sweet potatoes, peeled and cubed into 1-inch pieces
1 tablespoon olive oil
1 teaspoon garlic powder
1 teaspoon smoked paprika
Salt and freshly ground black pepper, to taste
1 medium yellow onion, chopped
3 cloves garlic, minced
4 cups vegetable broth (low sodium preferred)
1 teaspoon dried thyme
1/2 teaspoon ground cumin
1/4 teaspoon ground nutmeg
1 tablespoon fresh lemon juice
Optional garnish
chopped fresh parsley, roasted pumpkin seeds

Ingredients for Air Fryer Roasted Cauliflower and Sweet Potato Soup

Instructions

Preheat your air fryer to 400°F (200°C).
In a large mixing bowl, toss the cauliflower florets and sweet potato cubes with olive oil, garlic powder, smoked paprika, salt, and pepper until evenly coated.
Place the seasoned vegetables in the air fryer basket in a single layer. Air fry for 20-25 minutes, shaking the basket halfway through, until the vegetables are tender and golden brown with crisp edges.
Meanwhile, heat a large pot over medium heat. Add a splash of olive oil and sauté the chopped onion until translucent, about 5 minutes.
Add the minced garlic, dried thyme, and ground cumin to the onions and cook for 1-2 minutes until fragrant.
Transfer the roasted cauliflower and sweet potatoes to the pot with the onion and garlic mixture.
Pour in the vegetable broth and stir in the ground nutmeg. Bring to a simmer and cook for 10 minutes to meld flavors.
Using an immersion blender, carefully blend the soup until smooth and creamy. Alternatively, blend in batches in a blender, handling hot liquids with care.
Stir in fresh lemon juice and adjust seasoning with salt and pepper to taste.
Serve hot, garnished with chopped fresh parsley and roasted pumpkin seeds if desired.
To store, cool the soup completely before transferring to airtight containers. Refrigerate for up to 4 days or freeze for up to 3 months. Reheat gently before serving.

Air Fryer Roasted Cauliflower and Sweet Potato Soup cooking in the air fryer

Tips

Air Fryer Model Notes

Cook Air Fryer Roasted Cauliflower and Sweet Potato Soup in a single layer when possible. Basket models may need batches; oven-style models may need a tray rotation halfway through for even browning.

Crispiness Control

Pat the head cauliflower dry, avoid crowding, and use only a light coat of oil or sauce before cooking. Add wet sauces near the end when you want the outside to stay crisp.

Doneness Cues

Look for browned edges, a hot center, and the texture described in the instructions.

Reheat In The Air Fryer

Reheat leftovers at 325 F to 350 F in a single layer until hot and crisp again. Add fresh herbs, citrus, or sauce after reheating.

Frequently Asked Questions

Can I make Air Fryer Roasted Cauliflower and Sweet Potato Soup ahead of time?: You can prep the ingredients and seasoning ahead, but air fry close to serving for the best texture.
How do I keep this recipe from turning soggy?: Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.
Can I adjust the seasoning?: Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.
How do I know the head cauliflower is done?: Use the visual cues in the instructions first: the outside should be browned or crisp and the center should be hot and tender. For meat or seafood, confirm doneness with a food thermometer.

Ingredient Replacements

Customize this Air Fryer Roasted Cauliflower and Sweet Potato Soup to suit your dietary preferences or pantry by trying these ingredient substitutions:

Cauliflower: Substitute broccoli florets or Romanesco for similar texture and taste.
Sweet Potatoes: Replace with butternut squash or carrots for a slightly different sweetness and color.
Olive Oil: Swap with avocado oil or a light cooking spray for a lower-fat option.
Garlic Powder: Use fresh minced garlic for a more intense garlic flavor.
Smoked Paprika: Exchange for regular paprika or chipotle powder to add smoky or spicy notes.
Vegetable Broth: Use homemade bone broth or mushroom broth for deeper flavor (ensure gluten-free if required).
Lemon Juice: Substitute with apple cider vinegar or white wine vinegar to vary tang.
Optional Garnishes: Swap parsley for fresh cilantro, or roasted pumpkin seeds for toasted sunflower or hemp seeds.

These swaps maintain the soup’s gluten-free, vegan, and healthy profile while adding flexibility based on taste and pantry availability.

Storage

Store leftover Air Fryer Roasted Cauliflower and Sweet Potato Soup in an airtight container in the refrigerator for up to 3 days. Cool the food before sealing so excess steam does not soften the texture.

Freeze only if the main ingredient and coating are freezer-friendly. Wrap tightly and freeze for up to 1 month, then thaw overnight in the refrigerator before reheating.

Reheat in the air fryer at 325 F to 350 F in a single layer until hot and crisp again. Add fresh herbs, citrus, or sauce after reheating for the best flavor.

Read related air fryer guides and cooking tips.

More Recipes

Explore more recipes you may like.

Reviews

Rate this recipe and share a photo of your result.

No reviews yet.

Air Fryer Roasted Cauliflower and Sweet Potato Soup

Recipe Details

Ingredients

Instructions