01 - Bring a large pot of salted water to a boil. Cook the pasta until al dente according to package directions. Reserve ½ cup of pasta water, then drain the pasta.
02 - Heat olive oil in a large skillet over medium heat. Add beef bacon strips and cook for 5 to 7 minutes until crispy and golden. Remove from heat and set aside, leaving the bacon fat in the pan.
03 - Whisk together egg yolks, whole egg, heavy cream, grated Parmesan, black pepper, and sea salt in a bowl until smooth.
04 - Add the drained pasta to the skillet containing beef bacon. Toss well to coat the pasta evenly in the bacon fat.
05 - Remove the skillet from heat. Immediately pour the egg and cream mixture over the pasta, tossing vigorously to coat. Gradually add reserved pasta water as needed, tossing continuously until a creamy sauce forms and clings to the pasta.
06 - Plate immediately, garnishing with extra Parmesan and freshly chopped parsley if desired.