1 1/2 c. sugar
2/3 c. butter
1/4 c. water

Bring just to a boil, stirring slightly. Remove from heat and gradually add 12 ounces semi-sweet chips, stirring to melt evenly. Add 2 teaspoons vanilla. Transfer mixture to bowl. Beat in 4 eggs, one at a time.

1 1/2 c. flour
1/2 tsp. baking soda
1/2 tsp. salt

Add to chocolate batter, gradually. Add 1 cup semi-sweet chips and nuts if desired. (1 cup raisins is an interesting addition). Bake in greased 9x13 pan for 25 to 30 minutes.

FROSTING:

1/4 c. butter
1/2 c. milk
1 tsp. vanilla
6 oz. semi-sweet chips
2 c. powdered sugar, sifted

Melt butter with milk. Remove from heat. Stir in vanilla and chocolate chips. Add sugar and beat until smooth. Can add milk to thin if necessary.