Preheat oven to 350 degrees. Line an 8 x 8 baking dish with enough aluminum foil to have some hang over the sides. Grease and flour the aluminum foil.

Melt butter in a saucepan over medium heat. Once melted allow to cool.

Once cool, whisk in cocoa powder. Whisk in sugar. Once mixed, whisk in eggs one at a time. Whisk in vanilla. Add in flour and salt and mix just until combined. Don't over mix.

Spread half of the batter in the bottom of the prepared pan. Scatter quartered Three Musketeers. Spread remaining 1/2 of brownie batter over the top. Bake in preheated oven for 25 - 30 minutes or until a toothpick inserted comes out clean. Place on a cooling rack to cool completely.

Make the ganache by heating the heavy cream in a saucepan over medium-low heat just until steaming. Once steaming, remove from heat and whisk in chocolate chips. Whisk until smooth and shiny. Allow to set for two minutes. Pour over the brownies. Allow to set until hardened.

Once ganache has hardened, cut into 16 brownies. Place knives in the middle of all of the brownies and squeeze a little of the red frosting near the base. Serve.