Creating your White Truffle Lobster Mac n’ Cheese can be a straightforward task with the following steps:

1. Preheat your oven to 350°F (175°C).
2. Cook the macaroni: Boil water in a large pot and add the macaroni. Cook according to package directions until al dente. Drain and set aside.
3. Prepare the cheese sauce: In a large saucepan, melt the butter over medium heat. Whisk in the flour and cook for about 1-2 minutes, stirring constantly.
4. Gradually whisk in the milk to avoid lumps, and continue to stir until the mixture thickens (about 5-7 minutes).
5. Add cheeses: Stir in the sharp white cheddar, Gruyère, and Parmesan cheeses until melted and smooth.
6. Flavor enhancement: Add the white truffle oil, Dijon mustard, garlic powder, onion powder, salt, and pepper. Mix until combined.
7. Combine: In a large mixing bowl, combine the cooked macaroni and diced lobster. Pour the cheese sauce over the macaroni and lobster, stirring gently until evenly coated.
8. Transfer to baking dish: Pour the mixture into a greased 9×13-inch baking dish.
9. Bake: Place in the oven and bake for 25-30 minutes or until golden and bubbly.
10. Cool and garnish: Remove from the oven and let it cool for 5-10 minutes. Garnish with fresh parsley before serving.

These steps will guide you in creating an incredible culinary dish effortlessly.