Preheat your oven to 200°C (400°F). Gather a baking sheet, a knife, and a mixing bowl.
Trim the greens from the radishes, then wash them thoroughly and halve any large radishes to ensure even cooking.
Peeled garlic cloves are slightly crushed to release their fragrant aroma.
In the mixing bowl, toss the radishes and garlic with olive oil, a pinch of salt, and freshly cracked black pepper until everything is evenly coated.
Spread the coated radishes and garlic in a single layer on the baking sheet, making sure they aren’t overcrowded for crispy edges.
Roast in the oven for 20-25 minutes, shaking or flipping halfway, until the radishes are golden and tender, and the garlic is soft and fragrant.
Remove from the oven and let sit for 5 minutes to allow flavors to settle and develop further.
Finish by squeezing fresh lemon juice over the radishes and garlic, then sprinkle with a little more flaky sea salt if desired.
Serve warm as a flavorful side or appetizer, enjoying the smoky sweetness and tender, fragrant garlic.