Cook the bacon in a skillet over medium heat until crispy, then chop into bite-sized pieces and set aside.

In a small bowl, whisk together the egg yolk, grated Parmesan cheese, and heavy cream until smooth. Set this carbonara sauce aside.

In a medium saucepan, bring 1 cup of water to a boil and add the Buldak ramen noodles. Cook for 2-3 minutes until the noodles are tender and most of the water has evaporated.

Reduce the heat to low and stir in the Buldak ramen spice packet and butter, mixing thoroughly to coat the noodles.

Quickly remove the saucepan from the heat and pour the carbonara sauce over the noodles, stirring vigorously to prevent the egg yolk from scrambling. Mix until the sauce is creamy and evenly distributed.

Add the chopped bacon to the noodles and gently fold it in.

Serve the Carbonara Buldak Ramen immediately, topped with freshly cracked black pepper and optional chopped parsley for garnish.