Preheat your oven to 220°C (430°F) and line a large baking sheet with parchment paper.
Wash the radishes and carrots thoroughly. Trim the tops and roots of the radishes, then cut them in halves or quarters depending on their size. Slice the carrots into 1/2-inch thick rounds for even roasting.
Place the prepared radishes and carrots in a large mixing bowl. Drizzle with the olive oil and sprinkle with a pinch of salt. Toss everything together until the vegetables are evenly coated and glistening.
Spread the vegetables out in a single layer on the prepared baking sheet, making sure they aren’t overcrowded. This helps them get crispy and caramelized around the edges.
Roast the vegetables in the oven for about 25-30 minutes. Toss them once halfway through to promote even browning and caramelization. You’ll hear a gentle crackle and see the edges turn a deep golden brown.
Check for tenderness by poking a piece; they should be soft inside with crispy, caramelized edges. If needed, roast for an additional 3-5 minutes until they reach your desired doneness.
Remove from the oven and transfer to a serving dish. Squeeze fresh lemon juice over the hot vegetables for a bright, fresh contrast that enhances their natural sweetness.
Serve warm, garnished with freshly chopped herbs if desired. Enjoy the tender, caramelized bites that highlight the humble roots in a rustic, cozy way.