Carrot and rosemary golden couscous

Ingredients

• 1 cup orange juice , reconstituted or fresh
• 3 thin carrots , thinly sliced crosswise
• 1 large garlic clove , minced
• 1 tsp dried rosemary leaves , crumbled
• finely grated orange zest , of 1 orange
• 1 1/2 cups water
• 1/2 tsp salt
• 1 cup couscous
• 1/4 cup toasted pine nuts , optional
• 2 green onions , thinly sliced (optional)