Begin by bringing a large pot of salted water to a boil over high heat. Once boiling, add your choice of pasta and cook according to the package instructions until al dente, about 8–10 minutes. Drain and set aside.

In a large skillet over medium heat, add the lean ground beef. Cook until browned and fully cooked, about 5–7 minutes, breaking it apart with a spatula. Drain any excess fat if necessary.

Add the diced onion and minced garlic to the skillet with the browned beef. Cook for about 2–3 minutes until onions are soft and garlic is fragrant.

Stir in the diced tomatoes, Greek yogurt, and grated Parmesan cheese, mixing well. Reduce heat to low and let simmer for about 5 minutes.

Gently add the drained pasta to the skillet, mixing to ensure even coating with the creamy sauce. Heat through for an additional minute.