optional toppings for serving: extra cheese, chopped herbs, hollandaise sauce, & freshly ground pepper to taste
up to 2 cups add-ins
up to 1 cup shredded or crumbled cheese
1/4 tsp. each salt and pepper
1/2 cup heavy cream or heavy whipping cream
1/2 cup whole milk
4 large eggs
1 unbaked Flaky Pie Crust (what I used) or All Butter Pie Crust