Cook pasta in a large pot of salted boiling water according to package instructions until al dente, around 8-10 minutes. Reserve ½ cup of pasta water before draining.

In a large skillet, brown ground beef over medium heat for about 5-6 minutes. Drain excess grease, preserving residue.

Reduce heat to medium-low, add butter and garlic to the skillet. Sauté for 1-2 minutes until fragrant.

Stir in Italian seasoning, salt, pepper, and red pepper flakes. Cook for an additional minute.

Add beef broth, bring to a gentle simmer for 2-3 minutes. Stir in heavy cream and Parmesan until smooth.

Combine the cooked pasta and sauce in the skillet, adding reserved pasta water until desired consistency.

Taste and adjust seasoning. Remove from heat and garnish with parsley before serving.