Cook pasta in a pot of salted water until al dente. Drain, making sure to reserve 1 cup of pasta water and set aside.
In a small bowl whisk the eggs, Parmesan, salt and pepper.
While pasta is cooking add olive oil, garlic, and tuna to a skillet set over medium heat. Cook for 3-4 minutes or until fragrant. Reduce heat to low and stir in the pasta. Add the egg mixture, making sure to stir constantly.
Add a splash of pasta water to loosen the sauce and make it creamier if needed. Serve immediately, topped with more Parmesan and fresh parsley.
Notes
You can use spaghetti, bucatini, fettuccine or any other long noodle variety.It's important you stir constantly as you are mixing in the sauce with the pasta or else your egg mixture can scramble.Want to make it healthier and low carb? Use spaghetti squash noodles or zucchini noodles!Use freshly grated parmesan cheese rather than pre-grated parmesan.