01 -  Preheat oven to 200°C (400°F). 
 02 -  Toss grape halves with 1 tbsp olive oil, a pinch of salt, and freshly ground black pepper. Spread on a parchment-lined baking sheet and roast for 15–18 minutes, until grapes are soft and slightly caramelized. Let cool. 
 03 -  Bring a large pot of salted water to a boil. Cook the pasta according to package instructions until al dente. Drain and rinse briefly under cool water. 
 04 -  In a small skillet over medium heat, melt butter. Add walnut halves and toast for 2 minutes. Drizzle with honey and a pinch of salt, stirring for 2–3 minutes until glossy and sticky. Transfer to parchment paper to cool, then roughly chop. 
 05 -  Whisk together olive oil, white wine vinegar, Dijon mustard, honey, salt, and freshly ground black pepper to make the vinaigrette. 
 06 -  In a large mixing bowl, combine cooked pasta, roasted grapes, brie cubes, and candied walnuts. Drizzle with vinaigrette and gently toss to coat. 
 07 -  Garnish with chopped parsley, if desired. Serve at room temperature.