Step 1

Preheat the oven to 350 degrees F (175 degrees C).

Step 2

Melt butter and chocolate in a pan over low heat.

Step 3

Remove from the heat. Add sugar, eggs, corn syrup, and vanilla; stir until well combined. Pour into the pie crust.

Step 4

Bake in the preheated oven until mostly set but slightly jiggly, 40 to 45 minutes.

Step 5

Remove from the oven and cool to room temperature before serving; filling will thicken as it cools.