White German Chocolate Cake

Ingredients:

1 (4-ounce) bar white baking chocolate, chopped

2 1/2 cups all-purpose flour

1 teaspoon baking soda

1/4 teaspoon salt

1 cup butter (salted), softened

1 cup granulated sugar

4 large eggs, separated

2 teaspoons vanilla extract

1 1/4 cups buttermilk

2 1/2 cups finely chopped pecans

3 (5-ounce) cans evaporated milk

1 1/4 cups granulated sugar

1 cup butter (salted)

2/3 cup firmly packed light brown sugar

5 large egg yolks, lightly beaten

3 1/2 cups sweetened shredded coconut

2 teaspoons vanilla extract