While the pasta is cooking over medium/high heat add butter, salt, pepper, red pepper flakes, and garlic - whisk for 4 - 5 minutes until the butter turns a light brown. There might be some foam
Remove from heat - add in cheese, pasta and parsley
Serve
Recipe by Budget Savvy Diva at https://www.budgetsavvydiva.com/2016/05/parmesan-garlic-pasta/