The BEST brownies ever

I went to a one of those parties that us ladies host all the time (the ones that our husbands LOVE so much :) ) and there were some of the best brownies I have ever tasted there. They were frosted brownies to make it even better.

The secret: it's a Texas sheet cake recipe baked in a 9x13 inch pan

I got the recipe from my friend and made them for a 4th of July neighborhood party we are having.

Cake Ingredients:
2 cups flour
2 cups sugar
1 cup margarine
1/4 cup cocoa powder
1 cup water
1/2 buttermilk
1 teaspoon baking soda
2 eggs
1 teaspoon vanilla

Directions:
Preheat oven to 400. Mix flour and sugar together until blended. In a saucepan, put the margarine, cocoa, and water in and bring to a boil. Pour in the flour and sugar mixture. Add the buttermilk, soda, eggs,. and vanilla. Normally, for this cake you would pour it into a cookie sheet. However, for the brownies you will want to pour into a greased 9x13 dish. Cook on 400 for 25 minutes. Make the frosting while the cake is cooling.

Frosting Ingredients:
1/2 cup margarine
1/2 cup cocoa
5 tablespoons mil
1 teaspoon vanilla
3 1/2 cups powdered sugar

Directions:
Melt the margarine in a saucepan. When melted completely, move away from heat. Add the cocoa. Stir in the ilk and vanilla. Cool for about 5 minutes. Add the powdered sugar. I just kept folding it until it was blended. Pour over the warm cake.

Let cool completely before cutting.