Brownie Sheet Cake

2 c FLOUR

2 c WHITE SUGAR

1/2 ts SALT

1/2 c MARGARINE

1/2 c SHORTENING OR SALAD OIL

3 1/2 tb COCOA

1 c WATER

2 ea WELL BEATEN EGGS

1/2 c BUTTERMILK

1 t SODA

1 t CINNAMON

1 t VANILLA

MIX AND SIFT FLOUR, SUGAR AND SALT. SET ASIDE. PUT MARGARINE, SHORTENING, COCOA AND WATER IN A SAUCE PAN. BRING TO A BOIL. POUR OVER DRY INGREDIENTS AND STIR. COMBINE EGGS, BUTTERMILK, SODA AND VANILLA IN ANOTHER BOWL. ADD TO ABOVE MIXTURE. MIX WELL ABOUT FIVE MINUTES BEFORE DONE - PREPARE THE ICING!