Preheat the oven to 375°F (190°C).

Place the prepared pie crust in a 9-inch pie dish, pressing it against the sides.

In a mixing bowl, whisk together 6 large eggs, 1 cup heavy cream, 1/2 teaspoon salt, 1/4 teaspoon black pepper, and 1/4 teaspoon nutmeg.

Stir in 1 cup shredded cheese and 1 cup filling of your choice.

Carefully pour the egg mixture into the prepared pie crust, ensuring it fills evenly.

Bake for 45 minutes, until the center is set and the top is lightly golden.

Remove from the oven and let cool for 10 minutes.

Cut into wedges and serve warm or at room temperature.