Cook spaghetti according to package directions and drain, set aside. Reserve 1 cup pasta water.
In a bowl, combine ricotta, parmesan, mint, lemon zest, salt, and pepper and mix well.
Add ½ cup reserved pasta water to bowl with ricotta mixture and mix well. Add to skillet over medium heat. Add reserved pasta water till desired consistency reached.
Add drained pasta to skillet and toss with ricotta mixture.
Optional: add more chopped mint and lemon zest for garnish