Preheat the oven to 400F. Using a skillet melt butter over medium heat. Add flour and stir for 1-2 minutes.
Slowly pour in milk whisking continuously. Whisk until flour mixture dissolves. Next, add 1 cup of cheddar cheese, gruyere cheese, parmesan cheese, salt, pepper, garlic powder and mustard powder. Whisk everything into the sauce, until everything is combined.
Using a small baking pan, grease it with oil, then add cooked pasta, cut lobster and homemade mac and cheese sauce. Give everything, then sprinkle ¼ cup cheddar cheese and parmesan cheese, to taste. Bake on middle rack for 20-25 minutes, or until golden color on top. Enjoy while hot with Caesar Salad.
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Notes
Use good-quality cheese: Freshly grated cheese melts much smoother than pre-shredded and gives you that ultra-creamy sauce.
Don’t overcook the pasta: Cook it just until al dente — it will continue cooking in the oven and stay perfectly tender.
Lobster shortcut: Pre-cooked lobster meat works great here and saves time. Just gently fold it in so it stays juicy and tender.
Make it extra rich: For an ultra-luxurious texture, use whole milk or a splash of half-and-half in the cheese sauce.
Golden topping tip: If you love a crispy top, broil for the last 1–2 minutes — just keep a close eye on it!
Make ahead friendly: Assemble the mac and cheese, cover, and refrigerate up to 24 hours ahead. Bake just before serving.