Nonstick cooking spray, for spraying the baking sheet
3 cups all-purpose flour
4 sticks (1 pound) unsalted butter
2 cups granulated sugar
2 tablespoons vanilla extract
9 large eggs
6 sheets gelatin
2 cups whole milk
2 cups sweetened condensed milk
2 cups evaporated milk
2 tablespoons eggnog compound
2 cups (1 pint) heavy cream
3 tablespoons powdered sugar
1 tablespoon xanthan gum