2 pounds parsnips—peeled, halved lengthwise and sliced crosswise on the
diagonal 1/2 inch thick
2/3 cup extra-virgin olive oil
Salt and freshly ground pepper
2 tablespoons sherry vinegar
1 tablespoon whole-grain mustard
1/2 teaspoon sugar
1 tablespoon chopped parsley leaves
Preheat the oven to 425°. In a large bowl, toss the parsnips with 1/3 cup of the olive oil and season with salt and pepper. Spread the parsnips on a large baking sheet in an even layer and roast for 30 minutes, until caramelized.
In a small bowl, whisk the vinegar, mustard and sugar with the remaining 1/3 cup of olive oil until blended. Stir in the parsley, season with salt and pepper and pass the vinaigrette alongside the roasted parsnips.