Step 1

Preheat oven to 350F. Grease a 11x7-inch (2 quart) glass baking dish with non-stick cooking spray.

Step 2

In a medium mixing bowl, combine the brownie mix, egg, melted butter, and milk, stirring until smooth. Spread the batter into the prepared baking dish and bake at 350F for 25-28 minutes until a toothpick inserted into the center comes out clean.

Step 3

Remove the brownies from the oven and cool completely to room temperature.

Step 4

In a large mixing bowl, beat the cream cheese and vanilla extract with an electric mixer until smooth and creamy. Add the powdered sugar and mix until combined.

Step 5

In a small microwave safe bowl, heat the semi-sweet chocolate and unsalted butter in 30 second intervals until melted, stirring well between each cooking interval.

Step 6

Add the melted chocolate and butter mixture to the cream cheese mixture and stir until well combined. Gently fold in the Cool Whip.

Step 7

Spread the French silk layer over the cooled brownies, then spread on the remaining 8 ounce tub of Cool Whip.

Step 8

If desired, sprinkle chocolate shavings or mini chocolate chips over the French Silk Brownies. Slice and serve.