Start by washing the radishes thoroughly, then trim off the green tops and root ends. Slice them into halves or quarters, aiming for uniform thickness around 1/4 inch for even cooking.
Heat your skillet over medium and add the butter, allowing it to melt and foam gently, releasing a nutty aroma. Swirl the pan to coat the surface evenly.
Carefully add the sliced radishes to the skillet in a single layer. Hear them sizzle as they hit the butter. Cook for about 3-4 minutes, stirring occasionally, until they start to turn golden around the edges and soften slightly.
Reduce the heat slightly to medium-low and continue sautéing, stirring every couple of minutes. Cook for another 5-7 minutes, until the radishes are tender, caramelized, and glossy with a nutty brown butter coating.
Once the radishes are tender and beautifully browned, squeeze fresh lemon juice over them and sprinkle with cracked black pepper and a pinch of salt. Toss gently to combine, ensuring each piece is coated with the bright, flavorful dressing.
Remove the skillet from heat, sprinkle with chopped herbs, and give everything a final gentle toss. Serve immediately while warm, garnished with extra herbs if desired, for a vibrant and savory side dish.