Preheat oven to 350 degrees

Grease and flour 2 (8-inch) cake pans.
Melt chocolate in top of double boiler over low heat; cool.
Beat together butter and sugar.
Add eggs, vanilla, chocolate and baking powder. Mix well.
Add milk and flour alternately in ½ cup quantities.
Pour into prepared cake pans.
Bake at 350 degrees for 30 minutes.
Cool cakes in pans for 10 minutes.
Remove from pans and cool on rack.
Melt chocolate in top of double boiler over low heat; cool
Beat together butter and confectioners’ sugar.
Add egg, lemon juice, vanilla and chocolate.
Spread icing between layers, then on sides and top of cake.

Cake Ingredients:

4 (1-ounce) squares unsweetened chocolate
½ cup (1-stick) butter, softened
2 cups sugar
2 eggs
2 teaspoons vanilla
2 teaspoons baking powder
1 ½ cups milk
2 cups cake flour

Icing Ingredients:

2 (1-ounce) squares unsweetened chocolate
½ cup (1 stick) butter, softened
1 pound ( 3 ½ cups) confectioners’ sugar
1 egg, beaten
1 teaspoon fresh lemon juice
½ teaspoon vanilla