Peanut Butter Oatmeal Sandwich Cookies

These are heavenly!  If you are a fan of peanut butter then you will love these cookies.  They are soft with a lightly crisped bottom.  As good as the cookies themselves are, the filling is what makes these cookies so great.  Stay tuned for another sandwich cookie recipe on Tuesday, oatmeal raisin with a honey cream cheese filling.

Peanut Butter Oatmeal Sandwich Cookies

Source: Annie's Eats

Yields about 18 cookie sandwiches

Ingredients

For the cookies:

3/4 cup all-purpose flour

1/2 teaspoon baking soda

1/4 teaspoon baking powder

1/2 teaspoon salt

8 tablespoons unsalted butter, at room temperature

1/2 cup creamy peanut butter

1/2 cup granulated sugar

1/2 cup light brown sugar, packed

1 large egg

1 teaspoon vanilla extract

1 cup quick-cooking oats

For the filling:

3 tablespoons unsalted butter, at room temperature

1/2 cup creamy peanut butter

1 cup confectioners' sugar, sifted

3 tablespoons heavy cream

Directions

To make the cookies, preheat the oven to 350 degrees.  Line a baking sheet with parchment paper or a silicone baking mat.  In a small bowl, combine the flour, baking soda, baking powder, and salt.  Stir together with a fork to blend.  In the bowl of an electric mixer fitted with the paddle attachment, cream together the butter, peanut butter and sugars on medium-high speed until light and fluffy, about 2-3 minutes.  Blend in the egg and vanilla extract.  Add the dry ingredients and mix on low speed just until incorporated.  Stir in the oats until evenly blended.

Use a small cookie dough scoop to portion out the dough (about 2 teaspoons), rolling each portion into a ball, and place them on the prepared cookie sheet, a couple inches apart.  Bake about 10 minutes, rotating the sheet halfway through baking.  The cookies will be light golden brown and slightly puffed.  Let cool on the baking sheet 5 minutes, then transfer to a wire rack to cook completely.  Repeat with the remaining dough.  

Once the cookies have cooled completely, pair them by size.  To make the filling, combine the butter, peanut butter, confectioners' sugar in the bowl of an electric mixer.  Cream together until well combined.  Mix in the heavy cream until smooth and fluffy.  Use a pastry bag fitted with a plain round tip to pipe a swirl of filling onto the flat side of one cookie of each pair.  Sandwich together with the remaining cookie and press down so that the filling reaches the edges.