Step 1

Preheat oven to 350°F.  Line a 9X13 inch baking dish with Aluminum foil or parchment paper extending the short edges over by 2-3 inches. Spray well with nonstick cooking spray. Set aside.

Step 2

In a small bowl blend flour, baking powder, and salt. Set aside.

Step 3

In a medium microwave-safe bowl add German sweet chocolate and butter and microwave 1 1/2 minutes. Stir together. If the mixture isn't completely melted, microwave for 30 seconds intervals at 50% power stirring between intervals until completely melted. Mix in sugar until well combined. Add eggs, one at a time, mixing well, then add vanilla. Add flour mixture and mix just until blended. Stir in pecans. Pour into prepared baking dish.

Step 4

Bake in preheated oven for 35-38 minutes or until a toothpick inserted into the center comes out with just a few moist crumbs. Cool brownies completely then make the frosting.

Step 5

Stir the egg yolk, sugar, butter, vanilla, and evaporated milk together in a medium saucepan. Over medium heat, cook the mixture, stirring constantly, until thick and bubbly, about 15 minutes. Remove pan from heat. Add coconut and pecans and mix well. Allow frosting to cool for about half an hour. Spread over completely cooled brownies.