1 (18.25 ounce) package white cake mix
1 cup boiling water
1 (14.5 ounce) can frozen whipped topping, thawed
4 eggs
2 teaspoons vanilla extract
1 cup chocolate chips
1 (7 ounce) can marshmallow creme
4 tablespoons butter
Preheat oven to 350 degrees F (175 degrees C).
In a large bowl, combine cake mix, boiling water and whipped topping. Beat until smooth.
In a large glass or metal bowl, beat eggs until frothy. Stir in vanilla. Stir in chocolate chips and marshmallow creme. Pour batter into prepared pan.
Bake in preheated oven for 30 to 35 minutes, or until a toothpick inserted into the center of the cake comes out clean. Cool 10 minutes before serving. Cool completely before serving.