Step 1: Pre heat your oven to 350 degrees. Line a 9 x 13” baking dish with tin foil and lightly grease It lightly. Melt butter and shortening in the microwave or on the stove top.
Step 2: Pour melted butter and shortening into a large mixing bowl. Add cocoa and blend in well. Add sugar and mix well. Dissolve instant coffee in tablespoon of hot water and mix into the cocoa mixture. Add eggs one at a time and beat in well by hand. Stir in vanilla, flour and salt. Pour mixture into the baking dish and spread out evenly.
Step 3: Bake for 25-30 minutes. Remove from the oven and allow to fully cool.
Step 4: While brownies are cooling. To make the frosting – In a bowl cream butter and vanilla. Add powdered sugar and beat on medium speed. Dissolve instant coffee in milk and add to the mixture. Beat until lightly and fluffy. Spread the frosting over the cooled brownies.