Snap the tough lower stalk from the asparagus. Cut any thicker stems in half length ways so they are roughly the same size and toss the asparagus and the whole spring onions with the olive oil and season.
Heat the griddle pan on high heat for a few minutes. Place the asparagus and the spring onions on the hot griddle pan and cook for around 10 minutes turning occasionally so that you get a uniform charring effect on all sides and the vegetables are just cooked but still crunchy.
Whisk together all dressing ingredients and season to taste.
As soon as the vegetable are ready, on one or two plates, add the sliced spring onions, goat's cheese, pine nuts and sliced radishes and drizzle over your dressing.