Mississippi Mud Cake

I don't remember where I got this recipe
only that if I kept it,it must be a good one.

Ingredients:
3 1-ounce squares unsweetened chocolate
1 cup butter
4 eggs
2 cups sugar
1 ½ cups all-purpose flour
1 teaspoon baking powder
1 teaspoon vanilla extract
1 (7 ounce) jar marshmallow creme1 cup chopped nuts

Directions:
Melt chocolate and butter in a double boiler,
beat eggs until foamy, then add sugar.
Add all other ingredients to chocolate mixture.
Put in greased 9 X 13 inch pan.
Bake in a 325 degree oven for 30 minutes.
While cake is hot, put marshmallows over top.

When cake is cool, pour the following
cooked mixture over marshmallows:

Ingrdients:
1/2 cup butter
3 squares unsweetened chocolate
1 5-ounce can evaporated milk
1 cup sugar
1 pound confectioners’ sugar
1 teaspoon vanilla extract

Directions:
In a separate sauce pan, cook butter, chocolate,
milk and sugar in double boiler until melted.
Beat in confectioners’ sugar and vanilla.
When cake is cool, pour over marshmallows.