Oven-Baked Lobster Mac

Step 1 -Preheat the oven to 375 degrees F.

Step 2 -Coat a 4-quart casserole dish with cooking spray.

Step 3 -In a large pot of salted, boiling water, cook the cavatappi to al dente, according to the package directions. Drain the water.

Step 4 -While the cavatappi is cooking, in a medium saucepan over medium heat, melt 6 tablespoons of the butter.

Step 5 -Stir the onions into the melted butter and cook until they are soft and translucent, about 4-5 minutes.

Step 6 -Add the garlic to the onions and sauté until the garlic is fragrant, about 30 seconds.

Step 7 -Sprinkle the flour into the onion-garlic mixture, then reduce the heat to low. Cook, whisking constantly, about 2 minutes.

Step 8 -Whisk the chicken broth into the onion mixture, scraping any of the browned bits from the bottom of the saucepan.

Step 9 -Increase the heat to medium.

Step 10 -While still whisking, add the milk to the chicken broth mixture and bring to a gentle simmer. Cook the sauce until it is smooth and has thickened.

Step 11 -Transfer the saucepan from the heat, then add the Gruyère, the cheddar, 3/4 of the parmesan, the salt, the pepper, and the nutmeg to the sauce mixture and stir until all of the cheese is melted and the ingredients are combined.

Step 12 -Add the cooked cavatappi and the cooked lobster to the sauce and stir well to coat.

Step 13 -Pour the lobster mac into the prepared baking dish.

Step 14 -In a small bowl, melt the remaining butter in the microwave.

Step 15 -Stir the breadcrumbs and the remaining parmesan into the melted butter.

Step 16 -Sprinkle the breadcrumb mixture over the lobster mac.

Step 17 -Bake the lobster mac until the sauce is bubbly and the breadcrumb topping is golden-brown, about 15-20 minutes.

Step 18 -Serve the lobster mac garnished with the parsley.