Good picnic-y recipe from Smitten Kitchen. I used half orzo half couscous and that was fine.
For roasted tomatoes and dressing
2 pt red grape or cherry tomatoes (1 1/2 lb)
3 large garlic cloves, left unpeeled
1/4 cup extra-virgin olive oil
1/4 cup warm water
1 teaspoon fresh lemon juice
1 teaspoon salt
1/4 teaspoon black pepper
2 3/4 cups vegetable or chicken broth
2 1/4 cups pearl (Israeli) couscous
1 tablespoon olive oil
1/2 cup Kalamata or other brine-cured black olives, pitted and chopped
1/3 cup chopped fresh flat-leaf parsley
1/4 cup chopped fresh mint
1 teaspoon chopped fresh thyme
Roast tomatoes and make dressing:
Preheat oven to 250°F.
Halve tomatoes through stem ends and arrange, cut sides up, in 1 layer in a large shallow (1-inch-deep) baking pan. Add garlic to pan and roast in middle of oven until tomatoes are slightly shriveled around edges, about 1 hour. Cool in pan on a rack 30 minutes.
Peel garlic and puree with oil, water, lemon juice, salt, pepper, and 1/2 cup roasted tomatoes in a blender until dressing is smooth.
Make couscous: Bring broth to a boil in a 3-quart heavy saucepan and stir in couscous, then simmer, uncovered, 6 minutes. Cover pan and remove from heat. Let stand 10 minutes.
Spread couscous in 1 layer on a baking sheet and cool 15 minutes. Transfer couscous to a bowl and stir in remaining ingredients, dressing, roasted tomatoes, and salt and pepper to taste.