I even tried a Nutella filling in half of the "sandwiches" making a doubly delicious combination. A big glass of cold milk is a must with these treats!Peanut Butter Sandwiches
1 cup all-purpose flour
1/2 teaspoon baking soda
1/4 teaspoon baking powder
1/2 teaspoon salt
1/2 cup butter, room temperature
1/2 cup peanut butter
1/2 cup white sugar
1/2 cup packed light brown sugar
1 teaspoon vanilla extract
1 cup old fashioned oats
1 tablespoons butter, softened
1 cup confectioners' sugar
1/2 cup smooth peanut butter
2 1/2 tablespoons milk
Cream together 1/2 cup butter, 1/2 cup peanut butter, white sugar, brown sugar, and the vanilla. Next add the egg and beat well.
In a small bowl, combine the flour, baking soda, baking powder, and salt. Add the dry ingredients to the creamed mixture. Stir to combine. Place oats in a food processor and pulse for about 5 seconds. Add the oatmeal to the mixture and stir.
Lightly roll a heaping tablespoon of dough into a ball and then roll in white sugar. Place onto a parchment lined baking sheet, press each cookie down with a fork and then a second time in the opposite direction. Bake at 350 degrees F for 10 minutes, or until cookies are a light brown.
For the Filling: Cream 1 tablespoon butter with the confectioners' sugar, 1/2 cup smooth peanut butter, and the milk. Add more milk to thin if necessary. Spread filling onto half of the cooled cookies, then top with the other half to form sandwiches.
(For the Nutella filling I simply took 1/2 cup powdered sugar, 1-2 tablespoons milk, and 1/4 cup Nutella and stirred to combine.)