Chocolate Cake One

Ingredients :
one cup butter, cubed
one cup water
1/4 cup baking cocoa
two cups all-purpose flour
two cups sugar
one teaspoon baking soda
1/2 teaspoon salt
two eggs, lightly beaten
1/2 cup sour cream
FROSTING:
1/2 cup butter, softened
three 3/4 cups confectioners' sugar
1/4 cup baking cocoa
one teaspoon vanilla extract
five tablespoons milk

Directions :
In a large saucepan, bring the butter, water and cocoa to a boil. Remove from the heat. Merge the flour, sugar, baking soda and salt; stir in to butter mixture. Merge the eggs and sour cream; stir in to butter mixture until blended.
Pour in to a greased 15-in. x 10-in. x 1-in. baking pan. Bake at 350 degrees F for 18-25 minutes or until a toothpick inserted near the middle comes out neat. Cold on a wire rack.
For frosting, in a large mixing bowl, cream the butter and confectioners' sugar. Add cocoa, vanilla and milk to accomplish desired consistency. Spread over cake.