Minestrone

Name: Minestrone
Ingredients: 2 teaspoons olive oil; 2 carrots halved lengthwise and thinly sliced crosswise; 1 red bell pepper (ribs and seeds removed) cut into 1/2-inch pieces; 8 ounces green beans stem ends trimmed, cut into 2-inch lengths; 3 garlic cloves thinly sliced; 1/3 cup couscous; 1 can (14.5 ounces) reduced-sodium chicken broth; 2 tablespoons tomato paste; 1 can (15.5 ounces) navy beans drained and rinsed; Coarse salt; Flat-leaf parsley leaves (optional); Shaved Parmesan cheese for garnish (optional)