In a medium-sized pot, bring the vegetable broth to a gentle simmer over medium heat. Carefully add the orzo pasta and cook according to package instructions until al dente (usually about 8-10 minutes). Once cooked, drain the orzo and set aside.
While the orzo cooks, heat the olive oil in a large skillet over medium heat. Add the minced garlic and finely chopped onion. Sauté the mixture for about 3-4 minutes or until the onion is translucent and the garlic emits a fragrant aroma. Stir occasionally to prevent the garlic from burning.
Slowly pour in the heavy cream, stirring continuously as the mixture heats up. Allow the cream to come to a gentle simmer, which should take about 2-3 minutes.
Add the drained orzo pasta to the skillet, then sprinkle in the freshly grated Parmesan cheese and dried thyme. Gently fold the ingredients together until the cheese has completely melted and all the pasta is coated in a velvety creamy sauce.
Taste the mixture and season with salt and freshly ground pepper as desired. If you find the sauce too thick, add a splash of vegetable broth and stir until you reach your preferred consistency.
Once everything is well combined, remove the skillet from heat and let it sit for about 2-3 minutes to thicken slightly before serving.
Notes
Serve garnished with fresh parsley and additional Parmesan cheese.