In a large measuring cup, whisk together water, lemon juice, lemon zest, parmesan, corn starch and seasonings.
Add pasta to boiling water and let cook as directed on the package. Drain water from pasta and return pasta to pot.
In a small sauce pan over medium heat, add butter and oil. Once fully melted, begin whisking and then slowly pouring the lemon mixture into the pan while still whisking. Once incorporated, reduce heat to medium low.
Let sauce simmer until pasta is cooked. Whisk in milk and remove sauce from heat.
Pour sauce over pasta and use tongs to coat the pasta evenly then serve right away.
Keyword butter, easy pasta side dish, Garlic, grated parmesan, herbs, lemon, Parmesan, parsley, Pasta