Bring 4 cups of water or chicken broth to a rolling boil and add 1 teaspoon of salt.
Add the orzo pasta and cook, stirring occasionally, until it is al dente, usually 8 to 10 minutes.
Drain the orzo, reserving about half a cup of the cooking liquid, and set aside.
Heat olive oil in a large skillet over medium heat and gently cook the minced garlic until it becomes fragrant but not browned.
Add the butter to the skillet and stir until it melts and mixes well with the garlic and oil.
Transfer the cooked orzo into the skillet and stir to evenly coat it with the garlic butter.
If the mixture seems dry, gradually add the reserved pasta water to achieve a creamy consistency.
Stir in the freshly grated Parmesan cheese, mixing thoroughly until melted and smooth.
Season with salt and pepper according to your taste preferences.
Remove from heat and sprinkle with chopped fresh parsley if desired.
Serve immediately as a flavorful side dish to complement your main courses.