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Garlic Parmesan Air Fryer Roasted Radishes

Whether you’re looking for a keto potato substitute or simply need a low carb side dish to create more room for dessert, you’re in the right place. These crispy garlic parmesan roasted radishes are a legit potato side dish replacement, coming awfully close to the real deal.

Friend of the blog, Joe Duff, was first to turn me on to these with his how to make keto potatoes video. Radishes have never been an ingredient I reached for at the store, but I think that’s changed now. Because this entire recipe has just 225 calories and 13 grams of carbs!

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How to Make Roasted Radishes in an Air Fryer

Now that I’ve convinced you to give roasted radishes a try, let’s get down to business. I’ve included a visual recipe walkthrough below and included a few ingredient notes and prep tips in the post below. If you’re feeling confident, there’s a printable recipe card at the bottom of the post.

Cut 12 ounces of radishes into equally sized pieces.

trader joe's radishes trimmed and quartered

If you don’t have access to Trader Joe’s, that’s totally fine. You’ll just want to buy enough radishes to end up with about 12 ounces after trimming.

The only tip I have here is to make sure you’re quartering the large radishes, halving most of the radishes, and leaving any little baby radishes whole. Evenly sized pieces will ensure evenly roasted radishes.

Also, you’ll want to pick up two bags of radishes so you can make my low carb cheeseburger skillet.

Toss with 1/2 tablespoon of olive oil and air fry for 8 minutes at 400ºF. 

radishes in the instant pot air fryer basket

Don’t worry, the seasoning is coming. Similar to my air fryer red potatoes and cajun fries, reserving the seasoning for the back half of roasting prevents anything from burning.

Crush a clove of garlic and mix with a 1/2 tablespoon of olive oil and a pinch of salt, red pepper, and parsley flakes. 

olive oil, crushed garlic, pepper, and parsley flakes

In case you’re unfamiliar with crushing garlic and don’t have a garlic press, this is how I do it: Finely mince a clove of garlic and sprinkle a pinch of salt over the top. Drag the flat of a knife across the top of the garlic a few times, pressing hard against the cutting board, to create a paste.

Don’t worry about perfection here. And if you’re thinking about using garlic powder instead of freshly crushed garlic, I’m only judging you a little bit. For garlic powder, hold it out of the olive oil mixture and add it in with the grated parmesan later.

Side note: You could use some of my recipes like air fryer Greek potatoes or Mexican potatoes to change the seasoning of your roasted radishes.

Toss the air fried radishes with the garlic and olive oil mixture.

radishes with olive oil, garlic, pepper, and parsley flakes

Already looking like roasted potatoes, right?

Add 2 tablespoons of grated parmesan, stirring to evenly coat the radishes.

radishes with grated parmesan

Like I mentioned in my air fryer carrot fries recipe, the pre-grated, shelf stable parmesan tends to work best for things like these roasted radishes. Using freshly grated and shredded cheese is almost always the move, but this time the shortcut is the way.

And if you’re using garlic powder instead of crushed garlic, now would be the time to add it.

parmesan coated radishes before air frying final time

Don’t over mix your radishes once the parmesan is in the mix or you run the risk of it clumping together in spots.

Air fry for an additional 6-8 minutes at 400ºF until the roasted radishes are a crispy golden brown.

Every air fryer is different, so you’ll want to check on your roasted radishes early. Or at least keep a nose nearby to smell for any burning. Unless you’re into that sort of thing.

Serving Your Roasted Radishes

In case you need some serving ideas, here’s a handful of recipes that came to mind for pairing with your roasted radishes:

Well, that about does it. I’ve included notes for oven roasted radishes in the recipe card below. If you have any additional recipe questions I missed, feel free to leave a comment at the bottom of the post. And don’t forget to come back and let me know what you thought about your garlic parmesan roasted radishes in a recipe review!

Garlic Parmesan Air Fryer Roasted Radishes

Garlic Parmesan Air Fryer Roasted Radishes

Yield: 2 Servings
Prep Time: 5 minutes
Cook Time: 15 minutes
Total Time: 20 minutes

How to make crispy parmesan and garlic roasted radishes in the air fryer or oven.


  • 12 oz bag Radishes, trimmed and halved
  • 1 Tbsp (16g) Olive Oil, divided
  • 1 clove Garlic, crushed*
  • Pinch of Kosher Salt
  • 2 Tbsp (15g) Grated Parmesan
  • 1/4 tsp Red Pepper and Parsley Flakes (optional)


  1. Cut the radishes in half (quarter any extra large radishes) and toss with 1/2 Tbsp (8g) olive oil. Add the radishes to an air fryer basket and cook for 8 minutes at 400ºF.
  2. In the same bowl, add the remaining 1/2 Tbsp of olive oil, crushed garlic, salt, red pepper, and parsley flakes. Stir everything together.
  3. After 8 minutes in the air fryer, add the radishes back to the bowl with the olive oil mixture, tossing to evenly coat. Add the grated parmesan and stir everything together until the radishes are evenly coated in parmesan.
  4. Place the radishes back in the air fryer basket and cook for an additional 6-8 minutes at 400ºF until crispy golden brown.


*For crushed garlic, mince the clove of garlic and add a pinch of salt on top. Use the flat side of a knife's blade to press down on the garlic and drag across the cutting board. Repeat until a thick paste forms.

For Oven Roasted Radishes

Mix the halved radishes with all the olive oil, crushed garlic, red pepper, and parsley flakes before adding the parmesan. Bake for 20-25 minutes at 450ºF until crispy. For best results, use a similar method of baking the radishes on their own before tossing with seasoning.

To Double the Recipe

Double all the ingredients and follow the recipe as written, air frying the radishes for 10-12 minutes and shaking halfway through before adding all the seasoning ingredients and air frying an additional 6-10 minutes.

Nutrition Information:
Yield: 2 Servings Serving Size: 1/2 the recipe
Amount Per Serving: Calories: 115Total Fat: 8.5gCarbohydrates: 6.5gProtein: 3g

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Wednesday 1st of February 2023

OMG!!! Just made these and they were so good, I left the rest of my dinner and just ate these! LOL They are PHENOMINAL!!!! I have been looking for a good potato substitute and these are it!!! Thank you SO much for this easy air fryer recipe! They will DEFINITELY be a part of my keto meal plan.


Sunday 29th of May 2022

Absolutely delicious, crispy and flavorful. Who knew a radish could transform into something rich & satisfying.


Monday 29th of November 2021

Never been a fan of radish. Have been using them in place of potatoes lately because I am counting Macros. The addition of the parmesan cheese takes these to a whole different taste level. I cook them weekly. So easy in the AF!

Katie Collins

Thursday 19th of August 2021

Radishes are the new potatoes! I love them so much more! They have the same texture when cooked but I feel like I'm getting so many more nutrients with them. Garlic parmesan is a classic combo, but I've also experimented with chili powder and paprika and its amazing!!

Jennifer Torres

Wednesday 16th of June 2021

These look amazing! Quick question: With the grated parmesan, do you recommend the bottled shaker parmesan, or freshly grated parmesan?

Mason Woodruff

Thursday 17th of June 2021

I actually prefer the pre-grated parmesan in a shaker for recipes like these. Freshly grated works, but it doesn't always stick to what you're air frying as well.

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