3 cups all-purpose flour
1 teaspoon baking powder
1/2 teaspoon salt
1 cup creamy peanut butter (don't use natural unless you have the no-stir kind)
1/2 cup butter, at room temperature
3 cups granulated white sugar
6 large eggs
2 teaspoons vanilla extract
1 1/2 cups bittersweet chocolate chips
1 1/2 cups sifted powdered sugar
1/4 cup milk
1/4 cup creamy peanut butter
1/2 teaspoon vanilla extract
1/4 cup mini chocolate chips