Preheat the oven to 375°F (190°C).
Place the pie crust in a 9-inch pie dish and crimp the edges.
In a mixing bowl, whisk together eggs, milk, and heavy cream.
Stir in cheese, cooked bacon or ham, vegetables, salt, pepper, and nutmeg.
Pour the mixture into the prepared crust.
Bake for 35-40 minutes, or until the center is set and slightly golden.
Let cool for 10 minutes before slicing and serving.