In a large skillet, heat the olive oil over medium heat. Add the diced onion and cook until translucent, about 3 minutes.

Add the minced garlic and ground beef to the skillet. Cook until the beef is browned, breaking it up with a wooden spoon, about 5-7 minutes.

Stir in the diced tomatoes, beef broth, Italian seasoning, salt, and pepper. Bring to a simmer.

Add the orzo pasta, stirring to combine. Cover and cook for about 10-12 minutes, or until the orzo is tender and has absorbed most of the liquid.

Remove from heat and let sit for a few minutes. Serve topped with grated parmesan cheese and chopped parsley.