Three ingredient authentic fettuccine alfredo✨

1. Bring a large pot of generously salted water to a boil.
2. Slice the butter into small chunks and place them in a large bowl.
3. Boil the fettuccine according to package directions until al dente. A couple mins before the pasta is done, reserve 1 cup of pasta water and let it cool slightly while the pasta finishes cooking.
4. Drain the hot pasta and place it in the bowl with the butter. Add ~1/4 cup pasta water and mix with a large spoon for ~30 seconds until the butter begins to melt and coat the noodles.
5. Add the grated parmesan along with a couple more tablespoons of pasta water. Mix vigorously, adding more pasta water as needed a couple tablespoons at a time, until the cheese melts and emulsifies into a thick and creamy sauce. If you accidentally add too much pasta water you can re-balance the sauce by adding more grated parmesan.
6. Serve immediately with some more grated parm on top and enjoy!