Instructions

1. Preheat the oven to 350°F. Prepare the pasta according to the package instructions, drain, and set aside.
2. In a large saucepan, melt the 1/2 cup butter over medium heat. Once melted, add in the flour and whisk. Stir constantly for 2-3 minutes as the mixture cooks.
3. Gradually pour in the milk, whisking continuously as it combines. Follow with the cream, adding it slowly while still whisking. Let the sauce cook for about 5 minutes, whisking often, until it thickens.
4. Lower the heat, and add in 2 cups of the cheddar, Gruyere, and Parmesan cheese, stirring until each addition is fully melted. Season with salt and pepper, tasting to adjust as needed.
5. In a 9×13-inch casserole dish, add the cooked pasta and crab meat, stirring them together. Pour the cheese sauce over the mixture, and stir again to combine. Sprinkle the remaining 1/2 cup of cheddar on top.
6. In a medium bowl, mix the cracker crumbs, Old Bay seasoning, and 2 tablespoons melted butter. Spread this mixture evenly over the mac and cheese.
7. Bake for 35 minutes, or until the dish is bubbly and the topping has turned golden brown. Enjoy!