Heat a pan on medium/low heat and add the olive oil. Then add the minced garlic and red pepper flakes. Cook for 1-2 minutes, careful not to burn the garlic.
Next, add the small pasta to the pan and toast for 1-2 minutes.
Pour in the chicken broth and bring to a simmer. Keep simmering until the pasta absorbs almost all the broth, stirring every couple of minutes.
When the pasta is almost cooked, add the heavy cream and mix well. Continue cooking until pasta reaches al dente, adding broth as needed.
Add the butter, parmesan, and salt and pepper to taste. Mix well and top with parsley if desired.
Notes
Adjust chicken broth according to the shape of pasta used.