Absolutely The Best Brownies

Source: cdKitchen

Brownies
1 cup butter
8 ounces unsweetened chocolate
5 eggs
1 tablespoon vanilla
3 1/2 cups sugar
1/2 teaspoon salt
1 3/4 cup flour
1 cup chocolate chips
1 cup white chocolate -- coarsely chopped
1 cup macadamia nuts -- coarsely chopped

Mousse Topping
3/4 cup heavy whipping cream
1 cup chocolate chips
3 eggs
1/3 cup sugar
1 dash salt

Brownies: Melt butter and chocolate over low heat in heavy saucepan. Stir occasionally. When melted remove from heat and allow to cool slightly. In a large mixing bowl beat eggs, vanilla, sugar, and salt at medium speed for 10 minutes. Blend in chocolate-butter mixture at low speed until mixed. Don't overbeat. Add flour, blend gently until mixed, don't beat.

Stir in chocolate chips, white chocolate, and macadamia nuts. Pour batter into generously greased 9x13" pan. Spread Mousse Topping over brownie mixture. Bake at 375ºF for 40 to 45 minutes. Cool overnight, then cut into squares.

Mousse Topping: Heat whipping cream and chocolate chips in heavy saucepan, stirring constantly, until chocolate is melted and mixture is smooth. Cool slightly. Beat remaining ingredients until foamy; stir into chocolate mixture.