INGREDIENTS
4
Eggs plus 1 egg yolk, large
1 cup
All-purpose flour
1/4 tsp
Baking powder
1/2 cup
Bittersweet chocolate chips
1 cup
Brown sugar, light packed
1 cup
Brown sugar, packed light
3 cups
Confectioners' sugar
8 oz
Dark chocolate
1 tsp
Salt
4 tsp
Vanilla, pure
1 tsp
Espresso, instant
1 1/2 cups
Butter, unsalted
1/2 cup
Heavy cream