INGREDIENTS
•
For the cookie dough:
•
2 cups all-purpose flour
•
2 teaspoons baking powder
•
4 teaspoons baking soda
•
1 pound (4 sticks) butter, at room temperature
•
1 cup creamy natural peanut butter
•
1 cup granulated sugar
•
1 cup firmly packed light brown sugar
•
2 large eggs
•
2 teaspoons vanilla extract
•
2 1/2 cups quick-cooking oats
•
For the filling:
•
1/2 pound (2 sticks) butter, at room temperature
•
1 cup creamy peanut butter, preferably Skippy
•
3 1/3 cups confectioners’ sugar.