Heat olive oil in a pan over medium-low heat.
Add minced garlic and red pepper flakes, cooking for 1–2 minutes until fragrant.
Add pasta and toast lightly for 1–2 minutes.
Pour in chicken broth and bring to a gentle simmer.
Cook for 10–15 minutes, stirring occasionally, until pasta absorbs most of the liquid.
Add heavy cream and stir well, continuing to simmer until pasta is al dente.
Stir in butter, parmesan, salt, and pepper.
Mix until creamy and well combined.
Garnish with parsley and serve warm.
This one pot creamy garlic pasta thickens naturally as it cooks, creating a rich sauce without extra steps.