Prepare all of the ingredients and have them close by.
First, add the cornstarch, sugar, and salt into the medium saucepan and whisk them together.
Then, turn the burner to medium-low and slowly add in the milk, constantly whisking so it doesn’t burn on the bottom. Let the mixture come to a soft boil (about 6 minutes) while you’re whisking. You want it to thicken up, you’ll start to feel the tug on the whisk when it thickens.
Next, add in the chopped chocolate and let it melt in the milk mixture. Still, constantly whisking.
Add in the egg yolks and continue whisking and thinking about the mixture.
Bring the mixture to a simmer and cook for another 3 minutes while stirring. The mix should be thick like pudding, about 160 degrees on a candy thermometer.
Turn off the heat and add in the butter and vanilla, stir and pour the mixture into the prepared crumb crust.
Let the pie thicken and cool in the refrigerator, uncovered, for 4 hours or overnight.
Top with whipped cream. You can use store-bought or make your own!
To make your own whipped cream, beat 2 cups of heavy cream with 4 tablespoons of confectioners sugar and 2 teaspoons of vanilla until soft peaks form.
For this pie, I scooped whipped cream over the top and then topped with grated chocolate. I love the way it looks!