Texas Sheet Cake

Name: Texas Sheet Cake
Prep time: 10 min
Cook time: 45 min
Total time: 45 min
Yield: 18 portions
Ingredients: unsalted butter; 500 g all purpose white flour; 250 g sugar; ½ tsp salt; 225 g unsalted butter; 40 g cocoa powder; 225 g water; 225 g buttermilk; 2 egg, large; 1 tsp baking soda; 1 tsp vanilla extract, natural; 225 g unsalted butter; 1 tsp vanilla extract, natural; 100 g milk; 50 g cocoa powder; 370 g icing sugar; 90 g pecans