Chocolate Sheet Cake

Ingredients for cake:
1 1/2 cups water
2 cups sugar
3/4 cup butter or margarine
2 eggs, lightly beaten
1 teaspoon vanilla extract
2 cups all purpose flour
1/2 cup baking cocoa
2 teaspoons baking soda
1/2 teaspoon salt

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 Ingredients for frosting:
1/4 cup butter or margarine, softened
2 cups confectioners' sugar
2 T baking cocoa
1/2 teaspoon vanilla extract
2 T milk  

Preparing the cake: 
In a large saucepan, bring water to a boil. Remove from the heat. Stir in sugar and butter until butter is melted. Add eggs and vanilla; mix well. 

Combine flour, cocoa, baking soda and salt; add to butter mixture and mix thoroughly. Pour into a greased and floured 15-inch by 10-inch by 1-inch baking pan. 

Bake at 350 degrees F for 30 to 35 minutes or until a wooden pick inserted near the center comes out clean. Cool completely on a wire rack. 

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Preparing the frosting: 
Beat butter, confectioners' sugar, cocoa, vanilla and enough milk to reach a spreading consistency. Frost cake.