How to Make It
Preheat the oven to 350°. Spread the pine nuts in a pie plate and toast for about 8 minutes, or until golden.
Arrange the tomato slices in a ring, alternating yellow and red slices, on each of 6 large plates. Drizzle with the lemon-flavored olive oil and season with salt and pepper. Scatter the shredded basil and chopped chives on top.
Heat a large cast-iron skillet. In a bowl, whisk the light olive oil with the lemon juice and a generous pinch each of salt and pepper. Add the basil sprigs and watercress; toss well. Add the dressed greens to the skillet and cook over moderately high heat, tossing frequently, until charred and lightly wilted, 1 to 2 minutes.
Return the greens to the bowl, add the spinach and arugula and toss until wilted. Add the Stilton and pine nuts, season with salt and pepper and toss. Mound the salad in the centers of the plates and serve.