Cookie Cake (Texas Sheet Cake)

Combine:  2 Cups flour
2 cups sugar

Boil together: 
2 sticks butter
4 Tbs Cocoa
1 cup water

Pour over flour mixture and mix. 

Add:
1/2 cup Buttermilk or regular milk
1 tsp soda
1 tsp vanilla
2 beaten eggs

Mix and pour into greased cookie sheet.  Bake at 400 Degrees F for 20 Minutes.  Frost as soon as you remove from oven. 

Frosting
1 Stick Butter
1 Tbs Cocoa
6 Tbs Milk
Bring to a boil, remove from heat and add enough powdered sugar to thicken. Spread on cake.