INGREDIENTS
1
Egg, large
2 cups
All-purpose flour, unbleached
1/2 tsp
Baking soda
1/2 cup
Cocoa, unsweetened
1 cup
Granulated sugar
2 cups
Powdered sugar
1/2 tsp
Salt, fine
1/2 tsp
Vanilla extract
1/2 cup
White chocolate
2 sticks
Butter, unsalted
1 cup
Mascarpone
1 cup
Milk