Instructions:

1. Bake the cake: Prepare the German chocolate cake as per the instructions on the box in a 9×13-inch pan. Once done, let it cool for 10 minutes.
2. Poke holes: Use the back of a wooden spoon to poke holes all over the cake.
3. Prepare the filling: Mix together the sweetened condensed milk, evaporated milk, shredded coconut, and chopped pecans in a bowl. Pour this mixture over the cake, making sure it fills all the holes. Let it sit for 30 minutes to soak in.
4. Make the frosting: In a saucepan, whisk the heavy cream, sugar, egg yolks, and butter over medium heat. Stir constantly until it thickens (around 10-12 minutes).
5. Finish the frosting: Remove from heat and stir in vanilla extract, shredded coconut, and chopped pecans. Let the frosting cool for 15 minutes.
6. Frost the cake: Spread the cooled frosting evenly over the cake.
7. Chill: Refrigerate the cake for at least 2 hours before serving.