1. Prepare the Pudding Filling: In a medium saucepan, stir or whisk together the granulated sugar, cornstarch, and salt.

Pour in the whole milk and egg yolks.

Whisk to combine until the mixture is smooth.

2. Cook the Pudding:

Stir the mixture constantly over medium heat.

Cook until the mixture just barely comes to a boil and becomes thick, about 6 to 8 minutes (maybe less, maybe more; just watch it). The second it starts to bubble and thicken (it should be thick like pudding), remove it from the heat.

3. Add Chocolate, Vanilla, and Butter: Add the finely chopped bittersweet chocolate, vanilla extract, and butter to the hot pudding.

Stir until everything is beautifully combined and the chocolate is fully melted.

4. Pour Filling into Crust: Pour the chocolate pudding into the baked and cooled pie crust (if there is extra, spoon it into small dishes for individual servings).

5. Chill:

Place the pie in the refrigerator, uncovered, to chill for at least 4 hours. This allows the filling to set completely.

6. Serve: Cut the chilled pie into slices.

Serve with a dollop of whipped cream, if desired. Enjoy your incredibly delicious, homemade Chocolate Pie!