01 -
Unsalted butter (1/2 cup/113g).
02 -
Semi-sweet chocolate bars, chopped (8 oz/226g).
03 -
Granulated sugar (3/4 cup/150g).
04 -
Light or dark brown sugar (1/4 cup/50g).
05 -
Large eggs (3).
06 -
Pure vanilla extract (1 teaspoon).
07 -
All-purpose flour (2/3 cup/84g).
08 -
Unsweetened cocoa powder (2 tablespoons/10g).
09 -
Salt (1/4 teaspoon).
10 -
Semi-sweet chocolate chips (1 cup/180g).
11 -
Butter for frosting, softened (1/2 cup/113g).
12 -
Confectioners' sugar (1 1/2 cups/180g).
13 -
Cocoa powder for frosting (1/3 cup/27g).
14 -
Heavy cream or milk, slightly warm (3 tablespoons).
15 -
Vanilla extract for frosting (1/2 teaspoon).
16 -
Salt for frosting (pinch).