Servings: 60

1/2 cup butter, at room temperature
1/2 cup sugar
3 tablespoons peanut butter
1/2 teaspoon vanilla
1/2 teaspoon kosher salt
1 egg
1 2/3 cups all-purpose flour
1/2 teaspoon baking powder
1/2 cup butter, at room temperature
1/2 cup sugar
1 ounce semi-sweet chocolate, melted and cooled slightly
1/2 teaspoon vanilla
1/2 teaspoon kosher salt
1 egg
1 1/4 cups all-purpose flour
1/4 cup Dutch-processed cocoa powder
1/4 teaspoon baking powder