Sugar Free Texas Sheet Cake

So, we had a christmas party at work the other day and someone brought in a Texas Sheet cake. OMG was that tempting. That is my absolute favorite dessert of all time. I didn't give in and sample it because sugar really has a bad effect on me. So I pulled up a regular receipe online and modified it as much as I could to make it sugar free. I made the modified receipe last night and it was great. So now I'm passing it on to share. TEXAS SHEET CAKE 2 cups flour 2 cups splenda 2 cubes butter 1 cup water 1/4 cup cocoa (unsweetened and sugar free) 1/2 cup sour cream 2 eggs 1 tsp. baking soda 2 tbs. sugar-free vanilla flavoring (same thing I use in coffee) Mix Together Pour in cookie sheet with sides (jelly roll pan). Bake @ 400 degrees for 20 minutes. Icing for Texas Sheet Cake 1/4 cup cocoa (unsweetened and sugar free) (more or less to taste) 1/2 cup mulk (start with slightly less) 1 cube butter Cook these three ingredients together until bubbly: Add: 4 cups splenda, sifted 2 tsp sugar vanilla flavoring Walnuts Pour frosting on hot cake when it comes from oven. Frosting may run over sides Enjoy......Sandy (357/1830165)

By "cube" of butter, do you mean a stick of butter? Thanks for posting this. I just don't want to putin more butter than called for. Lois