INGREDIENTS
8 tbsp
unsalted butter, cut into small pieces, plus more for pan
6 oz
good-quality semisweet chocolate (coarsely chopped)
2/3 cup
all-purpose flour
1/2 tsp
baking powder
1/4 tsp
salt
3/4 cup
granulated sugar
3
large eggs
2 tsp
pure vanilla extract
4 tbsp
unsalted butter (melted)
1/2 cup
confectioners’ sugar
3/4 cup
smooth peanut butter
1/4 tsp
salt
1/2 tsp
pure vanilla extract