In small microwave safe bowl, melt 4 ounces of unsweetened baking chocolate until you're able to stir it (about 45 seconds on high). Set aside to cool.

In a stand mixer with the whisk attachment, beat 1 cup (2 sticks) of salted butter and 1 1/2 cups of granulated sugar until fluffy, about 2 minutes.

When the melted chocolate has cooled, drizzle it over the butter and sugar mixture. Add 1 teaspoon of vanilla extract and beat the mixture thoroughly until combined.

Turn your mixer to medium speed and over a period of 15 to 20 minutes, add in the four eggs one at a time, leaving 5 minutes between each egg addition.

Once the pie filling is well mixed, pour it into the baked pie shell. Smooth out the pie filling and place pie in the refrigerator to chill for at least two hours (preferably longer).

Spread homemade whipped cream on top and garnish with chocolate curls or chocolate sprinkles. Enjoy!