Preheat the oven to 350 degrees F.
Sprinkle the cheese evenly over the bottom of the pie crust. Top with the crab meat and sprinkle with the scallions. Whisk together the heavy cream, lemon zest, mustard, seafood seasoning, salt, mace and eggs in a bowl. Pour the egg mixture into the pie crust.
Bake until the custard sets, about 40 minutes. Let stand for 15 minutes before slicing.
A viewer or guest of the show, who may not be a professional cook, provided this recipe. It has not been tested for home use.