In a medium saucepan over medium heat, melt the butter until bubbly. Add the pearl couscous and toast it, stirring often for about 2-3 minutes until golden brown.

Add the minced garlic to the pan and sauté for 30 seconds to 1 minute until fragrant and lightly golden.

Pour in the water or vegetable broth and bring the mixture to a boil. Reduce heat to low, cover the pan, and let it simmer for about 8-10 minutes until liquid is absorbed.

Stir in the lemon zest and juice along with the Parmesan cheese, mixing until melted and creamy. Season with salt and pepper to taste.

Serve warm as a side dish or let cool for a refreshing salad version.