Texas Sheet Cake

In a large bowl, combine:
2 cups sugar
2 cups flour
½ tsp salt
1 tsp. cinnamon

Bring to a boil, add immediately to flour mixture, mixing well:
1 cup butter
1 cup water
1/3 cup cocoa

Add to above mixture, stir well:
½ cup sour cream
2 eggs
½ tsp soda
1 tsp vanilla

Pour into a greased and floured 17 x 12 inch pan.  Bake at 350 for 22 minutes. 
Make Fudge Frosting

            Fudge Frosting

Heat until butter melts, let cool:
6 T light cream
1/3 cup cocoa
½ cup butter

Add to above mixture, heat until smooth:
2 ½ cups powdered sugar
1 tsp vanilla

Frost warm cake.