Making the Mississippi Mud Pie with a Creamy Chocolate Filling is a straightforward process. Follow these easy steps to create a mouth-watering dessert:

1. Prepare the Crust:
– Preheat your oven to 350°F (175°C).
– In a mixing bowl, combine chocolate cookie crumbs, granulated sugar, and melted butter.
– Press the mixture firmly into the bottom of a 9-inch pie pan. Bake for 10 minutes, then let cool.

2. Make the Chocolate Filling:
– In a saucepan, heat 1 cup of heavy whipping cream over medium heat until just starting to simmer.
– Remove from heat and stir in semi-sweet chocolate chips, allowing them to melt completely.
– In a separate bowl, whisk together powdered sugar and eggs until smooth. Gradually pour in the melted chocolate mixture and stir until well combined.

3. Bake the Filling:
– Pour the chocolate filling into the cooled crust and bake for 25 minutes. Remove from the oven and let it cool for about 30 minutes.

4. Prepare the Marshmallow Meringue:
– In a clean mixing bowl, whisk egg whites and cream of tartar until soft peaks form.
– Gradually add granulated sugar while continuing to whip until stiff peaks form. Mix in vanilla extract.

5. Top the Pie:
– Once the chocolate filling has cooled, spread the marshmallow meringue over the surface of the pie, covering the filling completely.

6. Final Baking:
– Return the pie to the oven and bake for an additional 10 minutes, or until the meringue is lightly browned.
– Remove from the oven and allow to cool completely.

7. Chill the Pie:
– Place the pie in the refrigerator and let it chill for at least 2 hours to set up properly.

By following these steps, you will have a beautifully layered Mississippi Mud Pie with a Creamy Chocolate Filling that is sure to impress!