Garlic Butter Roasted Radishes: The Perfect Low-Carb Potato Alternative

Ellie Williams
6 Min Read

Quick One-Pan Roasted Radishes with Crispy Edges and Creamy Centers

KEY INFO

Prep time: 10 minutes
Cook time: 25 minutes
Total time: 35 minutes
Servings: 4-6
Difficulty level: Easy
Dietary tags: Keto, Low-carb, Vegetarian, Gluten-free, Dairy-free option

EQUIPMENT NEEDED
  • Large sheet pan
  • Sharp knife and cutting board
  • Mixing bowl
  • Medium saucepan (for browned butter)
  • Simple alternatives: Use olive oil instead of browned butter to skip the saucepan
INGREDIENTS

Main Components:

  • 1.5 lbs (680g) radishes, trimmed and halved
  • 3 tbsp (45ml) unsalted butter (or olive oil for dairy-free)
  • 4 garlic cloves, minced (or 1 tsp garlic powder)

Seasonings:

  • 1 tsp kosher salt
  • 1/2 tsp black pepper
  • 1 tsp fresh rosemary, chopped (or 1/4 tsp dried)

Optional Garnishes:

  • 2 tbsp fresh chives, chopped
  • Zest of 1/2 lemon
  • 1/4 cup grated Parmesan cheese
METHOD
  1. Preheat your oven to 425°F (220°C).
    Line a large sheet pan with parchment paper.
  2. Trim and halve the radishes.
    Cut off greens and root ends, then slice each radish in half. Pat completely dry with paper towels.
  3. Make the browned butter garlic mixture.
    Melt butter in a small saucepan over medium heat. Swirl until it turns golden brown and smells nutty (about 3 minutes). Remove from heat and stir in minced garlic.
  4. Toss the radishes.
    In a large bowl, combine radishes with the garlic butter mixture. Add salt, pepper, and rosemary. Toss until evenly coated.
  5. Arrange on the sheet pan.
    Spread radishes in a single layer, cut-side down. Don’t overcrowd – use two pans if needed.
  6. Roast for 20-25 minutes.
    Flip halfway through cooking.
    Look for: Golden edges and fork-tender centers.
  7. Finish and serve.
    Sprinkle with chives, lemon zest, and Parmesan if using. Serve immediately while crispy.
CRUCIAL TIPS
  • Don’t skip the browning: Browned butter adds incredible nutty depth
  • Single layer only: Crowded radishes steam instead of roast
  • Pat them dry: Moisture prevents proper browning
  • Cut uniformly: Same-sized pieces cook evenly
STORAGE & SCALING

Storage: Refrigerate leftovers up to 4 days in airtight container

Reheating: Pop back in a 400°F oven for 5 minutes to crisp up

Scaling: Recipe doubles easily – just use multiple sheet pans

Common mistakes to avoid:

  • Adding garlic to hot butter (it burns instantly)
  • Undercooking (they’ll taste too sharp)
  • Using wet radishes (soggy results)
VARIATIONS
  • Air Fryer Version: 375°F for 15 minutes, shaking halfway
  • Vegan Option: Replace butter with olive oil or avocado oil
  • Herb Swaps: Try thyme, tarragon, or fresh parsley instead of rosemary
  • Extra Crispy: Boil radishes 10 minutes first, then gently smash before roasting

I’ve been making this garlic butter roasted radish recipe for three years now, and it never fails to surprise dinner guests. The first time I served these beauties, my potato-loving husband actually asked for seconds.

Here’s what happens when you roast radishes: that sharp, peppery bite completely disappears. Instead, you get creamy, buttery centers with golden, caramelized edges that taste remarkably like roasted potatoes.

The magic is in the browning. Don’t rush this step – that nutty, golden butter transforms ordinary radishes into something special. I learned this the hard way after serving bland, barely-roasted radishes to my book club (they were polite, but I could tell).

Why radishes work as potato substitutes:
  • Same creamy texture when roasted
  • Absorb flavors beautifully
  • Only 2g carbs per cup (potatoes have 26g)
  • Available year-round and budget-friendly

The rosemary isn’t optional in my kitchen. Fresh herbs make all the difference, but dried works when that’s what you’ve got. I keep a little herb garden on my windowsill specifically for recipes like this one.

My favorite serving suggestions:
  • Alongside grilled chicken or steak
  • Tossed into grain bowls
  • As a holiday side that accommodates keto relatives
  • Mixed with other roasted vegetables

Don’t tell anyone, but I sometimes eat these straight off the pan while they’re still sizzling. The crispy edges are absolutely addictive, and the garlic butter pools in the little radish cups like nature’s perfect serving vessels.

If you’re new to roasted radishes, start here. This recipe converts even the most dedicated potato lovers, and once you master the basic technique, you can experiment with different herbs and seasonings.

Trust me on the single layer rule – I’ve learned that patience pays off. Crowded radishes steam and turn mushy instead of developing those gorgeous caramelized edges we’re after.

Give these garlic butter roasted radishes a try. Your taste buds (and your carb count) will thank you.

https://12tomatoes.com/butter-roasted-radishes/
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Hello, my name is Ellie Williams and I am a food blogger. I have always had a love for cooking and trying new recipes, and I love sharing my creations with others through my blog.