Chocolate Cake with Fudge Frosting

Chocolate Cake with Fudge Frosting   
¾ cup butter
2 cups sugar
1 ½ cups boiling water
2 cups flour
2 teaspoons baking soda
¼ teaspoon salt
½ cup cocoa
1 teaspoon vanilla
2 eggs
Frosting
6 tablespoons butter
6 tablespoons evaporated
1 cup sugar
½ cup chocolate chip
1 teaspoon vanilla
½ cup nuts, chopped (optional)
1. Mix 3/4 c. butter and 2 c. sugar with 1 1/2 boiling water. Set aside to cool.
2. Sift flour, soda, salt and cocoa into the cooled mixture. Add 2 beaten eggs, and 1 tsp. vanilla.
3. Pour into a 9x13 pan.
4. Bake 350 until done. (about 40 minutes). Allow to cool before topping with the Fudge Frosting.
5. Fudge Frosting:
6. Bring to a boil the butter, evaporated milk, and sugar. Boil for 3 minutes. Add chocolate chips, and 1 tsp. vanilla. Beat until spreadable. Add chopped nuts.