Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente, about 8–10 minutes. Drain and set aside.

In a large skillet, heat olive oil over medium heat. Add the chopped onion and sauté until softened and golden, about 3-4 minutes.

Stir in minced garlic and red pepper flakes, cooking for an additional minute.

Add ground beef, breaking it up with a spoon. Cook for 5-7 minutes, until evenly browned.

If there's excess fat, carefully drain it, leaving some for flavor.

Stir in Italian seasoning, beef broth, and heavy cream. Simmer for 3-5 minutes until slightly thickened.

Add the pasta and grated Parmesan cheese to the skillet, tossing until coated.

Taste and adjust seasoning; consider adding a tablespoon of butter for richness.

Plate and garnish with fresh parsley before serving.