Follow these simple steps to create your Lobster Mac and Cheese:

1. Cook the Pasta: Bring a large pot of salted water to a boil. Add elbow macaroni and cook until al dente, following package instructions. Drain and set aside.
2. Make the Cheese Sauce: In a medium saucepan, melt the butter over medium heat. Once melted, whisk in the flour and cook for about 1 minute until lightly golden.
3. Add Milk: Slowly whisk in the whole milk, stirring constantly to prevent lumps. Bring the mixture to a simmer.
4. Add Cheeses and Seasonings: Once simmering, reduce the heat to low. Stir in the cheddar and Gruyère cheese until fully melted and smooth. Add garlic powder, onion powder, salt, black pepper, and cayenne pepper.
5. Combine Pasta and Lobster: Add the cooked macaroni and chopped lobster to the cheese sauce, stirring until everything is well coated.
6. Prepare for Baking: Preheat your oven to 350°F (175°C). Transfer the mac and cheese mixture to a greased baking dish.
7. Add Topping: In a small bowl, mix bread crumbs with a little melted butter. Sprinkle the bread crumb mixture evenly over the mac and cheese.
8. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes or until the top is golden brown and bubbly.
9. Cool and Garnish: Remove from the oven and let it cool for about 5-10 minutes. Garnish with chopped fresh parsley before serving.

These straightforward steps will guide you in crafting this incredible Lobster Mac and Cheese that is sure to wow anyone fortunate enough to taste it!