Bring a large pot of water to a boil. Add pasta and cook according to package instructions.
While pasta is cooking, melt 1 tbsp of butter in a pan over medium heat. Add the breadcrumbs and garlic powder to the pan and sauté for 2 minutes. Add parsley and cook until breadcrumbs are browned.* Transfer the breadcrumb mixture to a bowl.
Place the pan back on the stove and melt the remaining 2 tbsp of butter and add the olive oil. Add the garlic and a pinch of salt & pepper (and red pepper flakes, if using) to the pan and sauté for 3-5 minutes.
Reserve 1 cup of pasta water before draining the cooked pasta.
Add the cooked pasta to the garlic/butter mixture and toss to combine. Slowly add pasta water until the desired sauce consistency is reached.
Sprinkle the breadcrumbs over the pasta and toss to combine. Serve with additional chopped parsley.**