In a medium saucepan, bring 2 cups of chicken or vegetable broth to a boil. This will infuse the couscous with flavor.
Once the broth is boiling, remove it from heat and stir in the 1 1/2 cups of whole wheat couscous. Cover the saucepan with a lid and let it sit for about 5 minutes to allow the couscous to absorb the liquid.
After 5 minutes, remove the lid and use a fork to fluff the couscous gently. This will help separate the grains and give it a light texture.
Add the thinly sliced green onions and finely grated Parmesan cheese to the couscous. Stir gently to combine everything evenly.
Finally, add fresh ground black pepper to taste. Give it one last stir to incorporate all the flavors.
Transfer the couscous to a serving dish and enjoy it warm as a side to your favorite main course.