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Easy roasted cauliflower in the oven or air fryer

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Text: Easy roasted cauliflower in the oven or air fryer. Vegan and gluten free. Roasted cauliflower in bowl with lemon slice.

This easy roasted cauliflower side dish is ridiculously easy to make. It’s a hands-off dish that can be made in the oven or air fryer. With a squeeze of lemon juice and pinch of salt, it lets the toasty flavor of cauliflower really shine. Vegan & gluten-free.

Roasted cauliflower cooked in yellow bowl with lemon slice.

Years ago a friend of mine was trying to incorporate more vegetables into her diet. I suggested that she could pick up a head of cauliflower and roast the florets.

She said, “Oh, you can break it into florets yourself?”

She’d always just bought them prepared in plastic bags.

Her comment took me by surprise. And at first I thought she was joking. I’ve been breaking cauliflower heads into florets since I was a kid.

We tend to assume that people have the same kitchen history that we do. But that isn’t always the case. There are so many convenience items available that people may or may not be as familiar with “the basics” as you’d guess.

So today we’re talking about one of my favorite ways to prepare cauliflower.

(And if you want to use the kind that’s already broken down into florets, hey, that will work too!)

Overhead roasted cauliflower with lemon slice on table with sumac.

Cook in the air fryer or oven

Whenever people say they don’t like certain vegetables, I have to wonder how they’ve had them prepared. Preparation makes such an enormous difference in terms of taste and texture!

While steamed cauliflower is fine, roasting it really takes it up a notch.

Those dark marks from roasting are not only pretty to the eye, they also mean that the cauliflower has a crustiness around the edges, and a nutty, savory flavor.

Head of cauliflower on cutting board.

Start by breaking down the cauliflower

For either method, you’ll want to start by breaking a head into florets.

Pull off the outer leaves. Then cut the head in half.

Cauliflower with stem on cutting board.

Cauliflower cut in half with center core.

Open it up, and you’ll see a hard middle core. Cut that out.

(Want to eat the center core? You can do that! Here are some ideas on using the whole vegetable from stem to core in a post from Epicurious.)

Cauliflower florets on cutting board.

Once that core is gone, it’s easy to use your hands to break off the florets.

You want the florets to be close to the same size, so that they roast in the same length of time. But some variation isn’t going to make or break anything.

If any of the florets are way too big, tear them apart further or cut them in half.

Now it’s time to choose air fryer or oven…

Cauliflower florets on baking sheet with parchment paper.

How to roast cauliflower in the oven

The standard way to roast cauliflower is with the oven. Preheat the oven to 425 degrees.

If you’ve got parchment paper to line a baking sheet, that makes for easy clean-up. But if not, that’s no problem. You can totally do it without the parchment paper.

Toss the florets in oil and sprinkle them with salt. Then line them evenly across the baking sheet.

If there is too much on one sheet or if the florets are touching, they won’t roast as well. You want air between them, so that they can brown. Use a second baking sheet, if necessary.

Cook for 25 minutes, stopping a couple of times to flip for even roasting.

Cauliflower florets in air fryer basket.

How to roast cauliflower in the air fryer

The air fryer is really convenient, because it’s even faster than oven roasting. And you don’t have to wait for the air fryer to heat up, which means that cauliflower is on your plate that much quicker.

Be careful not to overfill the air fryer basket. It won’t brown as nicely in an overfilled basket.

If you do overfill your basket, you’ll have to shake the basket more often so that the florets have a chance to roast in different places. And you’ll have to increase your cooking time.

Depending on the size of your air fryer, you may want to work in batches.

Toss the cauliflower in oil or use oil spray. Then add a pinch of salt.

Easy roasted cauliflower in air fryer basket.

Air fry at 400 degrees for 13 minutes, stopping a couple of times to shake the basket, so that the florets can move around and roast in different places.

Floret sizes vary. So if they don’t look quite done enough, cook for a few minutes longer.

Roasted cauliflower in bowl, tossed with lemon juice, and salt.

Once the it is roasted, move it to a bowl

Sprinkle on lemon juice. Toss the florets, so that they’re evenly coated.

Sumac in small serving bowl.

For a little added color, sprinkle with sumac

Sumac is a spice that’s common in Middle Eastern cooking. It comes from the fruit of the sumac, which is a member of the cashew family.

Be aware that most sumac mixes have a little bit of salt in them. So be conscious of that when adding other salt to the dish.

The thing that really makes sumac stand out is its bold red color. Like paprika on vegan potato salad or devilish potatoes, it’s a nice finish that makes the cauliflower look more “complete.”

Sumac also has a light, lemony flavor that works well in this dish. However, if you don’t have sumac in your kitchen, no worries. Just leave it off.

Taste for salt, and add more if necessary.

Close up roasted cauliflower in bowl with lemon slice.

Cooked cauliflower in bowl with lemon slice.

(Isn’t that cauliflower bowl fun? I got it in Washington on vacation a few years back. Read about it in my post on where to go in Seattle.)

Roasted cauliflower is a wonderful side for so many dishes.

Serve roasted cauliflower with:

  • Vegan lentil burgers
  • Baked farro vegan casserole
  • Vegan lentil recipe with caramelized onions
  • Double hummus wraps

It would also be an easy side dish for the holidays with your other beloved vegan Thanksgiving recipes.

But my favorite way to serve this easy roasted cauliflower is as the star attraction in a brown rice bowl with hummus, spinach salad, and lemon tahini dressing.

Close up roasted cauliflower in small bowl with lemon slice.

Easy roasted cauliflower cooked in air fryer in bowl.

Easy roasted cauliflower in the oven or air fryer

Easy roasted cauliflower is a wonderful weeknight or anytime side dish. It can be made in the oven or air fryer. Add a squeeze of lemon juice & pinch of sumac to finish it off.
4 from 3 votes
Print Pin Rate
Course: Side Dish
Cuisine: American, Vegan
Keyword: air fryer, easy vegetable dish
Prep Time: 10 minutes
Cook Time: 13 minutes
Total Time: 23 minutes
Servings: 4 people
Calories: 34kcal
Author: Cadry Nelson

Ingredients

  • 4 cups medium-sized cauliflower florets
  • 1 teaspoon organic canola oil or a couple spritzes of oil spray
  • Pinch salt
  • 2 teaspoons lemon juice
  • 1/8 teaspoon sumac Optional

Instructions

  • TO ROAST CAULIFLOWER IN THE OVEN: Preheat oven to 425 degrees. Line a baking sheet with parchment paper. Put cauliflower florets on baking sheet. Toss them in oil and sprinkle them with salt. Then line them evenly across the baking sheet. If there is too much cauliflower on one sheet or if the florets are touching, they won’t roast as well. You want air between them, so that they can brown. Cook in oven for 25 minutes, stopping a couple of times to flip for even roasting.
  • TO ROAST CAULIFLOWER IN THE AIR FRYER: Put cauliflower florets in air fryer basket. Toss them with oil or spray them with a couple of oil spritzes. Add a pinch of salt. Air fry cauliflower at 400 degrees for 13 minutes, stopping a couple of times to shake the basket, so that the cauliflower can move around and roast in different places. Cauliflower floret sizes vary. So if the cauliflower doesn’t look quite done enough, cook for a few minutes longer.
  • Once the cauliflower is roasted in the air fryer or oven, move it to a bowl. Sprinkle on lemon juice. Toss the cauliflower, so that it’s evenly coated.
  • For a little added color, sprinkle the cauliflower with sumac (optional). Be aware that most sumac mixes have a little bit of salt in them. So be conscious of that when adding other salt to the dish.
  • Taste for salt, and add more if necessary.

Nutrition

Calories: 34kcal | Carbohydrates: 5g | Protein: 1g | Fat: 1g | Sodium: 30mg | Potassium: 299mg | Fiber: 2g | Sugar: 1g | Vitamin C: 49.2mg | Calcium: 22mg | Iron: 0.4mg
Tried this recipe?Tag @cadryskitchen on Instagram and hashtag it #cadryskitchen!
 
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Posted On: October 23, 2018
Comment: Leave a Comment

About Cadry

Cadry Nelson is the writer, photographer, and recipe creator behind Cadry’s Kitchen, a vegan food & lifestyle blog started in 2009. Through approachable recipes, vegan travel guides, and down-to-earth discussions on the social aspects of being vegan, Cadry shows that living a vegan lifestyle is deliciously uncomplicated. Cadry has been featured on NBC News, Mashable, Today, Reader's Digest, Yahoo, Delish, Shape, and Huffington Post.

Comments

  1. Shell says

    October 24, 2018 at 3:28 pm

    5 stars
    I love roasted cauliflower and make it often. I’ve never added lemon juice. I will give that a try!

    Reply
    • Cadry says

      October 27, 2018 at 1:19 pm

      Yes, give it a try! I like it both ways – with and without lemon juice. I’ll be interested to hear what you think!

      Reply
  2. Gene says

    November 18, 2018 at 6:28 am

    2 stars
    I tried this recipe in our air fryer and it turned out very tough and rubbery! I know the actual cauliflower was OK because I sampled a few pieces raw. What could have gone wrong?

    Reply
    • Cadry says

      November 18, 2018 at 6:49 am

      I’m sorry it didn’t work out for you, Gene. I haven’t had that problem, but here are some things you could try next time.

      For this recipe, I used cauliflower that I cut down into florets. But if you use bagged cauliflower, it will be a little drier than fresh cauliflower cut down from a head. Because bagged cauliflower is drier, it will need a shorter amount of cooking time. I don’t know if yours was fresh or bagged, but that’s something to consider.

      Also, floret sizes, air fryer basket sizes, and how full your basket is can vary. So for that reason, when I’m air frying, I always check the doneness as I cook. Whenever you stop to shake the basket, have a sample. That way, you can reach the perfect doneness for you. Every time it’s going to be a little bit different.

      If those ideas don’t work, I’d try lowering the temperature a bit next time in case your air fryer runs hotter than mine. Best of luck, and let me know how that works out for you!

      Reply
  3. Heather says

    September 13, 2019 at 9:08 pm

    5 stars
    Perfect roasted cauliflower from my air fryer! Love the simple taste of the salt + lemon juice. Thanks for the tips!

    Reply
    • Cadry says

      September 14, 2019 at 7:52 am

      I’m so glad to hear that, Heather! Thanks for the feedback!

      Reply

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Hi, I'm Cadry Nelson. I'm the recipe creator, writer, and photographer behind Cadry's Kitchen.

Cadry's Kitchen is a vegan food blog featuring comfort food classics. Most recipes are ready in about 30 minutes.

Contact me at cadryskitchen@gmail.com.

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