Pre heat oven 350. In a large bowl, combine the flour, sugar and salt. Stir together and set aside.

In another bowl, mix the buttermilk, baking soda, vanilla and eggs. Mix with a fork and set aside.

In a medium saucepan, melt the butter and add the cocoa. Whisk together to combine. Bring 1 cup water to a boil. When the butter is melted, pour the boiling water in the pan. Allow to bubble for a moment, then turn off the heat. Pour the chocolate mixture into the flour mixture. Stir together for a moment to cool the chocolate, then pour in the egg mixture. Stir together until smooth, then pour into an engrossed jelly roll pan (or rimmed baking sheet) and bake for 20 minutes.

While the cake is baking, make the icing. Melt the butter in a saucepan over medium-high. Add the cocoa powder and stir until smooth. Add the milk, vanilla, and powdered sugar. Stir together. Dump in the pecans and stir until well combined.

Immediately after removing the cake from the oven, pour the warm icing over the top. You'll want to avoid doing much spreading, so try to distribute it evenly as you pour. Enjoy!!