Low Carb Radishes (Easy Roasted Recipe)

These low carb radishes are roasted in the oven until tender inside with lightly caramelized edges, making them an easy alternative to roasted potatoes. I've found that roasting completely changes the flavor of raw radishes, mellowing their peppery bite and bringing out a slightly sweeter flavor.

These make the simplest low carb and keto-friendly side made with just radishes, olive oil, garlic salt, and pepper!

We also recommend you try more of our low carb vegetable sides like low carb broccoli cakes, cheesy green beans, and low carb cauliflower mac and cheese

Things to Know About Low Carb Roasted Radishes

• Roasting radishes at 400°F for about 20-25 minutes softens the centers and caramelizes the outside.
• Raw radishes are crisp and peppery, but roasting makes them much milder and slightly sweet.
• This recipe is low carb, keto-friendly, vegan, paleo, and gluten-free.
• Roasted radishes work anywhere you would normally serve a simple roasted vegetable or potato-style side. Add your favorite potato seasonings like cheese, herb mixes, and more.

Ingredients You'll Need

See the recipe card for exact quantities.

• Fresh radishes: Red radishes are the easiest to find, but mixed-color radishes work just as well. I cut larger radishes into halves or quarters so the pieces are roughly the same size.
• Extra Virgin Olive oil: You can use any neutral oil here.
• Garlic salt: Adds both salt and mild garlic flavor. You can also use garlic powder plus fine sea salt if that's what you have.
• Black pepper: Adds a simple savory finish without overpowering the mild flavor of the roasted radishes.

How to Roast Radishes

Step 1: Prep the radishes

Preheat the oven to 400°F and position the rack in the center.

Trim the ends from the radishes and cut them into halves or quarters depending on their size. I try to keep the pieces fairly even so they finish cooking at about the same time.

Step 2: Season

Spread the radishes on a parchment-lined baking sheet.

Drizzle with olive oil, then sprinkle with garlic salt and black pepper. Toss directly on the pan until everything is evenly coated.

Step 3: Roast

Bake for 15 minutes, then flip the radishes.

Continue roasting for another 5-10 minutes, checking them around the 20-minute mark. They're done when the centers are tender and the cut sides have started to brown.

Serve warm, with fresh herbs if desired.

Recipe Tips

• Cut them evenly. Smaller pieces cook faster, so keeping them close in size helps prevent some radishes from getting too soft while others are still firm.
• Give them room on the pan. Spreading them out helps them roast instead of steam.
• Flip after 15 minutes. This gives more of the surface a chance to brown.
• Start checking early. Radish size varies quite a bit, so I start testing them at about 20 minutes rather than relying only on the clock.
• Season them like potatoes. Italian seasoning, lemon pepper, herbs, or a favorite potato seasoning blend all work well.

Substitutions and Variations

Add cheese: Sprinkle about ½ cup of shredded white cheese over the radishes near the end of cooking and broil for about 2 minutes for a cheesy finish.

Use another oil: Avocado oil can be substituted for olive oil.

Change the seasoning: Try Italian seasoning, ranch seasoning, lemon pepper, smoked paprika, or a simple salt-and-pepper blend.

Air fry instead: Our air fried radishes cook in about 10-14 minutes at 400°F and are a good option when you're making a smaller batch.

What Pairs Well with Radishes?

Roasted radishes pair well with simple low carb mains like stovetop chicken thighs, baked lemon chicken breast, low carb pork chops, or sheet pan salmon (swap the potatoes for radishes). They're especially good anywhere you'd normally serve roasted potatoes alongside a protein.

Meal Prep and Storage

• Store leftover roasted radishes in an airtight container in the refrigerator for up to 4-5 days.
• For the best texture, reheat them in the oven or air fryer until warmed through. The microwave works, but the radishes will be softer.
• You can also wash, trim, and cut the radishes a day ahead so they are ready to season and roast.
• I would not make freezing a major recommendation here because roasted radishes can become softer after thawing.

Macros

Per serving, the current recipe card lists approximately:

• Calories: 41
• Total carbs: 2g
• Fat: 5g

FAQs

Are radishes OK for a low carb diet?

Yes. Radishes are naturally low in carbohydrates and can fit easily into a low carb diet. They have just 2 net carbs per serving!

What do radishes taste like when roasted?

Roasted radishes taste much milder and less peppery than raw radishes. Roasting softens the centers and brings out a slightly sweet, savory flavor.

Do roasted radishes really taste like potatoes?

Roasted radishes have a potato-like texture and work well as a lower-carb substitute, but they do not taste exactly like potatoes. They become soft and mild when roasted, while still keeping a subtle radish flavor.

Low Carb Vegetable Recipes

• Slow cooker cabbage and bacon
• Cauliflower keto mashed potatoes
• Green bean casserole with cream cheese
• Pureed butternut squash (low carb)
• Creamed spinach (with fresh spinach)
• Keto cauliflower casserole with bacon
• Low carb radishes
• Keto Brussel sprouts casserole
• Air fryer bacon wrapped green beans

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