Begin by thoroughly cleaning the radishes under cold water to remove any dirt. Trim the tops and roots before slicing larger radishes in half or quarters for even cooking.

In a small saucepan, gently melt the butter over low heat or in the microwave until it is completely smooth, avoiding any browning.

In a large mixing bowl, combine the cleaned radishes with the melted butter. Sprinkle in the flaky sea salt along with optional black pepper and fresh herbs. Toss to coat evenly.

Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.

Spread the radishes cut side down on the prepared baking sheet in a single layer. Roast for 20-25 minutes, flipping halfway through until fork-tender and golden.

Remove from the oven and let cool for a minute. Optionally, sprinkle with additional flaky sea salt, fresh herbs, or a hint of citrus zest before serving.