Preheat oven to 350 degrees. Combine butter, water and cocoa in a saucepan over med. heat. Heat until butter melts. Add sugar, flour, salt, eggs, soda, sour cream, and vanilla. Mix well. Pour into a 15 x 10 x 1- inch jelly roll pan (it really does fit!). Bake for 20 minutes.
1/2 cup butter
1/4 cup cocoa
1/4 cup plus 2 Tablespoons milk
1 box confectioner's sugar (1 pound), sifted (4 1/4 cups, sifted)
1/2 tsp. vanilla
Combine butter, cocoa and milk in a saucepan. Bring to boil. Add remaining ingredients and mix well with electric mixer. Spread over the hot sheet cake. Sprinkle with chopped pecans, if desired.
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