Mediterranean Grilled Vegetable Tagine Recipe

• 1 small red onion
• 2 red bell peppers, quartered
• 1 green bell pepper, quartered
• 2 teaspoons balsamic vinegar
• 1/2 teaspoon kosher salt, divided
• 1 teaspoon olive oil, divided
• 1 3/4 cups chopped onion
• 2 garlic cloves, minced
• 1 teaspoon ground cumin
• 1/2 teaspoon fennel seeds, crushed
• 1/4 teaspoon ground cinnamon
• 1 1/4 cups water, divided
• 1/4 cup sliced pitted green olives
• 1/4 cup golden raisins
• 1/4 teaspoon freshly ground black pepper
• 1 (28-ounce) can diced tomatoes, undrained
• 6 small red potatoes, quartered
• Cooking spray
• 2/3 cup uncooked couscous
• 1/4 cup pine nuts, toasted

Directions