Craving the comfort of crispy, buttery potatoes on keto? These Air Fryer Garlic Butter Radishes are the perfect low-carb alternative, delivering all the golden, garlicky satisfaction of classic roast potatoes—without the carbs. Radishes transform in the air fryer, losing their peppery bite and taking on a tender, potato-like texture that soaks up rich garlic butter beautifully.
Ready in just 20 minutes, this recipe is ideal for busy weeknights or as a crowd-pleasing side for your favourite mains. Simply toss halved radishes in melted butter, garlic, and herbs, then air fry until golden and crisp at the edges. The result: a moreish, keto-friendly side that pairs perfectly with roast meats, grilled fish, or even as a snack with a tangy dip.
With just a handful of ingredients and minimal prep, you’ll have a dish that satisfies potato cravings while keeping carbs ultra-low. Let’s get cooking!
At a glance
- Time: 20 minutes
- Difficulty: Easy
- Servings: 4
- Cost: Affordable
Macros (per serving)
- Protein: 1.2 g
- Fat: 8.5 g
- Carbs: 2.6 g
- Energy: 90 kcal
Ingredients
- 500g Radishes (Trimmed and halved)
- 50g Unsalted butter (Melted)
- 3 Garlic cloves (Finely minced)
- 2 tbsp Fresh parsley (Chopped)
- 1/2 tsp Sea salt
- 1/4 tsp Black pepper
- 1 tbsp Olive oil (For coating)
Equipment Needed
- Air fryer
- Mixing bowl
- Small saucepan
- Knife
- Chopping board
- Spoon
Steps
- Preheat your air fryer to 200°C for 3 minutes.
- In a mixing bowl, toss the halved radishes with olive oil, sea salt, and black pepper until evenly coated.
- Spread the radishes in a single layer in the air fryer basket. Air fry for 10 minutes, shaking the basket halfway through.
- While the radishes cook, melt the butter in a small saucepan over low heat. Add the minced garlic and cook for 1–2 minutes until fragrant but not browned.
- After 10 minutes, check the radishes. They should be tender and starting to crisp at the edges. Air fry for an additional 2–3 minutes if needed.
- Transfer the hot radishes to a bowl. Pour over the garlic butter and toss well to coat.
- Sprinkle with chopped parsley and toss again. Taste and adjust seasoning if needed.
- Serve immediately while hot and crispy.
Allergens & Swaps
Allergens:
Recipe contains: dairy
Potential swaps:
- Unsalted butter → Dairy-free butter or coconut oil — For a dairy-free version
- Radishes → Turnips — For a slightly sweeter, still low-carb alternative
Serving Ideas
- With grilled chicken – for a balanced, protein-rich meal.
- Alongside roast beef – as a classic Sunday roast side.
- As a snack with sour cream dip – for a satisfying, crunchy bite.
Additional Info
Chefs Tips
- Pat the radishes dry after washing to help them crisp up.
- For extra flavour, add a pinch of smoked paprika or dried thyme to the butter.
- Shake the air fryer basket halfway through for even cooking.
Variations
- Add grated parmesan before serving for a cheesy finish.
- Swap parsley for fresh dill or chives for a different herb twist.
Troubleshooting
- If radishes are too soft, air fry for an extra 2–3 minutes.
- If garlic burns, add it to the butter off the heat and let it infuse instead.
Storage & Reheating
Store cooled radishes in an airtight container in the fridge. Reheat in the air fryer for best results.
- Fridge: up to 3 days
- Freezer: up to 0 months
- Reheat: Air fry at 180°C for 3–4 minutes until hot and crisp.
Ingredient Spotlight
Radishes: When roasted or air fried, radishes mellow and become tender, making them a fantastic low-carb potato substitute.
Butter: Adds richness and helps the garlic and herbs cling to the radishes for maximum flavour.
FAQs
Do air fryer radishes really taste like potatoes?
Yes, when cooked, radishes lose their peppery bite and develop a mild, potato-like texture and flavour, especially when tossed in garlic butter.
Can I make this recipe dairy-free?
Absolutely! Simply swap the butter for a dairy-free alternative or coconut oil.
How do I store leftovers?
Cool completely, then refrigerate in an airtight container for up to 3 days. Reheat in the air fryer for best texture.
Can I use other root vegetables?
Yes, turnips work well as a low-carb alternative, but avoid starchy veg like carrots or parsnips for keto.
Why are my radishes not crispy?
Make sure to dry the radishes well before tossing in oil, and don’t overcrowd the air fryer basket.
Keto Air Fryer Garlic Butter Radishes – Crispy Low-Carb Potato Swap
Ingredients
- 500g Radishes (Trimmed and halved)
- 50g Unsalted butter (Melted)
- 3 Garlic cloves (Finely minced)
- 2 tbsp Fresh parsley (Chopped)
- 1/2 tsp Sea salt
- 1/4 tsp Black pepper
- 1 tbsp Olive oil (For coating)
Instructions
- Preheat your air fryer to 200°C for 3 minutes.
- In a mixing bowl, toss the halved radishes with olive oil, sea salt, and black pepper until evenly coated.
- Spread the radishes in a single layer in the air fryer basket. Air fry for 10 minutes, shaking the basket halfway through.
- While the radishes cook, melt the butter in a small saucepan over low heat. Add the minced garlic and cook for 1–2 minutes until fragrant but not browned.
- After 10 minutes, check the radishes. They should be tender and starting to crisp at the edges. Air fry for an additional 2–3 minutes if needed.
- Transfer the hot radishes to a bowl. Pour over the garlic butter and toss well to coat.
- Sprinkle with chopped parsley and toss again. Taste and adjust seasoning if needed.
- Serve immediately while hot and crispy.
Allergens & Swaps
Allergens: dairy
- Unsalted butter → Dairy-free butter or coconut oil — For a dairy-free version
- Radishes → Turnips — For a slightly sweeter, still low-carb alternative
Nutrition (per serving)
- Protein: 1.2 g
- Fat: 8.5 g
- Carbs: 2.6 g
- Energy: 90 kcal
