INGREDIENTS
2
Eggs, large
2 1/2 cups
All-purpose flour
1 1/4 tsp
Baking powder
2 1/2 tsp
Baking soda
1 1/4 cups
Cocoa powder, unsweetened Dutch-process
2 1/2 cups
Granulated sugar
1 1/4 tsp
Salt
1 1/4 tsp
Vanilla extract, pure
1
White-chocolate buttercream
5/8 cup
Vegetable oil
1
Vegetable oil
1
Desiccated unsweetened coconut
1
Butter, Unsalted
1 1/4 cups
Buttermilk, low-fat
1 qt
Chocolate ice cream, good-quality
1 1/2 qt
Vanilla ice cream, good-quality
4
Marshmallows, large
1
Marzipan penguins
White, pale-blue, and silver sanding sugar, for decorating