Mom's Easy Saucepan Chocolate Cake

2 c. SR flour
2 c. sugar
1 stick margarine
1/2 c. shortening
1 c. water
3 T. cocoa
2 eggs, well beaten
1/2 c. buttermilk
1 T. vanilla

Sift flour and sugar. Combine together. In a saucepan, place margarine, shortening, water, and cocoa. Bring this to a boil and pour over flour mixture. Add eggs, buttermilk, and vanilla. Mix well (it will be thin). Place in sprayed 9x13 pan. Bake for 30 minutes or until done.
Frosting:
1 stick margarine
3 T. cocoa
6 T. milk
1 t. vanilla
1 box powdered sugar
1 1/2 -2 c. chopped pecans

Melt margarine in saucepan. Add cocoa and milk. Bring to a boil. Remove from heat and add powdered sugar, vanilla, and nuts. Spread on cake while hot. (Poke holes in cake, before frosting, if desired.) Cut into squares to serve.