INGREDIENTS
1/3 cup
dark or dutch-processed cocoa powder
1/4 tsp
baking soda
1/3 cup
vegetable oil, divided
1/4 cup
boiling water
1 cup
granulated sugar
1
egg
2/3 cup
all-purpose flour
1/2 tsp
vanilla extract
1/4 tsp
salt
3 tbsp
unsalted butter, melted
1/2 cup
smooth peanut butter
1/3 cup
confectioners’ sugar
1/4 tsp
salt
1/2 tsp
vanilla extract