Preheat your oven to 200°C (400°F). Arrange a baking sheet nearby.
Trim the green tops and root ends from the radishes, then slice them in half lengthwise, aiming for about 1.5 cm thickness. This helps them roast evenly and caramelize nicely.
In a mixing bowl, toss the halved radishes with minced garlic, olive oil, chopped herbs, and a pinch of salt until they are well coated. This ensures even flavor distribution and a shiny, crisp surface.
Spread the coated radishes in a single layer on the baking sheet, making sure they’re not crowded. This allows air to circulate for even roasting and caramelization.
Place the tray in the oven and roast for 20-25 minutes, shaking the pan or flipping the radishes halfway through. Look for golden edges and fragrant aroma as signs they are nearing readiness.
Once the radishes are tender and caramelized around the edges, remove the baking sheet from the oven. Let them rest for a couple of minutes to settle and intensify their flavors.
Squeeze fresh lemon juice over the radishes to brighten their sweet, smoky flavors and add a touch of freshness. Toss gently to combine.
Transfer the radishes to a serving dish, sprinkle with a bit more salt if desired, and garnish with extra herbs or chili flakes for a spicy kick. Serve warm for a cozy, flavorful side.