Grease a sheet cake pan.
flour and sugar
Bring to a boil:
2 sticks butter, water, & 4 tbsp. cocoa
Pour over dry mixture and mix in:
eggs, buttermilk, baking soda, cinnamon, vanilla
Bake at 400º for 20-25 minutes.
Heat: 1 stick butter, 4 tbsp. cocoa, and milk, add 1/2 to 1 box of powder sugar to achieve desired consistency and 1 c. pecans. Spread on cake while hot.