Preheat your oven to 350°F (175°C) and fit a pre-made pie crust into your pie dish. Chill while preparing the filling.

In a medium saucepan over low heat, melt semi-sweet chocolate chips with whole milk, stirring until smooth for about 5-7 minutes.

In a large bowl, whisk together three large eggs and one cup of granulated sugar until light and fluffy, about 3-4 minutes.

Once the chocolate has cooled slightly, stir in the vanilla extract, then fold the chocolate mixture into the egg and sugar mix gently.

Pour the filling into the chilled pie crust and bake for 30-35 minutes, until slightly jiggly in the center.

Cool the pie at room temperature for at least an hour before slicing. Serve with optional toppings.