Good Texas Style Brownies

cups all purpose flour 2 cups sugar 1/2 cup (1 stick) butter 1/2 cup shortening 1 cup strong brewed coffee 1/4 cup dark, unsweetened cocoa 1/2 cup buttermilk (if you don't have buttermilk, add 2 tsp. vinegar or lemon juice to 1/2 cup milk) 2 eggs 1 tsp. baking soda 1 tsp. vanilla Frosting: 1/2 cup (1 stick) butter 2 Tbsp. dark cocoa 1/4 cup milk 3 1/2 cups unsifted confectioner's sugar 1 tsp. vanilla In a large mixing bowl, combine flour and sugar. In heavy saucepan, combine butter, shortening, coffee and cocoa. Stir and heat to boiling. Pour boiling mixture over flour mixture. Add buttermilk, eggs, baking soda and vanilla. Mix well. Pour into a well buttered 17 1/2" by 11" jelly roll pan. Bake 400 F. for 20 minutes or until they test done in the center. While brownies bake, mix the frosting. In a saucepan, combine butter, cocoa and milk. Heat to boiling while stirring. Add confectioner's sugar and vanilla until frosting is smooth. Pour warm frosting over brownies as soon as you take them from the oven. Cool. Makes 48 bars.