Pre-heat oven to 300º F. Grease three 8-inch or two 9-inch round cake pans with crisco and lightly dust with flour.
In mixing bowl (or stand mixer), add flour, sugar, cocoa, baking powder, baking soda, and salt. Stir until well combined.
Add milk, vegetable oil, eggs, and vanilla to flour mixture and mix together on medium speed until well mixed. Reduce the speed to low and add boiling water to the cake batter a little bit at a time. Once the water is all mixed in, beat on high for about 1 minute.
Evenly distribute cake batter between the three pans (or two ) cake pans, which ever you decide to use.
Bake for 30-35 minutes, or until a toothpick or cake tester inserted in the center comes out clean.
Remove from the oven and allow to cool for about 10 minutes. Remove from the pan and cool completely.
Frost cake with frosting.
German Chocolate Frosting:
double the recipe above if you need to.
In a large saucepan combine evaporated milk and cornstarch and mix; add in sugar, egg yolks, margarine and vanilla. Cook over low-medium heat until it reaches a slow boil. Stirring constantly until thick, about 12 minutes from when it starts to slowly boil. Remove from heat and stir in pecans and coconut, this frosting will thicken up as it cools. Let cool 1 hour then spread on cooled cake. To make this cake easy to slice, layer cake with frosting, then set in the refrigerator for 30 minutes