Chocolate Flat Cake

Chocolate Flat Cake 

2 Cups flour
2 Cups Sugar
2 tsp. baking powder
1 tsp. salt
1/2 cup sour cream
3 eggs
2 tsp vanilla
1 cup butter (2 cubes)
1 cup water
1/4 cup unsweetened cocoa powder
18x13 jelly roll pan
3 Tbl. unsweetened cocoa powder
1/2 tsp vanilla
7 tbl. milk
3 and 3/4 cups powdered sugar (sifted)

Butter cookie sheet
Preheat oven 350
Mix dry ingredients
Mix wet ingredients together
Combine wet and dry ingredients
Heat 1 cup butter, 1 cup water, 1/4 cup unsweetened cocoa powder until melted
Add to above mixture
Pour into prepared pan
Bake for 15-16 minutes until toothpick comes out clean

Combine 3 Tbl. unsweetened cocoa powder
1/2 tsp vanilla
7 Tbls milk
3 3/4 cups powdered sugar (sifted)
heat gently and stir until combined
Pour over cake immediately after removing from oven