Vegetables-. Preheat oven to 425 degrees. Combine the first 4 ingredients in a large, shallow roasting pan. Whisk together the oil, vinegar, herbs, garlic, salt and pepper in a small bowl until blended. Drizzle the mixture over the vegetables and stir to coat. Roast uncovered, until the vegetables are tender, (about 20 minutes), stirring once halfway through the roasting time.
Couscous-. In a saucepan, heat butter, add couscous and stir to coat. Cook until it is starting to brown. Add seasoning package. Add boiling broth, stir, cover, and remove form the heat. Let stand for 5 minutes. Place in a serving bowl, fluff with a fork and arrange vegetables on top.