The Best Peanut Butter Sandwich Cookies

June 26, 2024

Get ready to dive into the dreamiest cookies! My new Peanut Butter Sandwich Cookies are made with soft and chewy peanut butter cookies and the most delicious peanut butter buttercream.

A stack of peanut butter sandwich cookies in a bread dish with a towel and whisk next to it.

After my Biscoff Sandwich Cookies went viral, I knew I needed to make a peanut butter version. Two soft and chewy peanut butter cookies sandwich together with peanut butter buttercream to make the yummiest cookies. Truly a peanut butter lover’s dream come true!

A peanut butter sandwich cookie split in half with the buttercream spilling out.

Ingredients for Peanut Butter Sandwich Cookies

You are going to love how easy this recipe is! Here’s a list of ingredients you’ll need for these sandwich peanut butter cookies.

  • All-purpose flour
  • Smooth peanut butter (I use Skippy)
  • Brown sugar
  • Unsalted butter
  • Salt
  • Baking soda
  • Milk
  • Egg
  • Vanilla extract
  • Heavy whipping cream (for the frosting)
  • Powdered sugar (also for the frosting

How to Make Peanut Butter Sandwich Cookies

To make this recipe for peanut butter sandwich cookies, you’ll start by making the cookie dough. Simply beat together the butter, peanut butter, brown sugar, and vanilla. Add the egg, followed by the dry ingredients and a little milk.

These cookies will bake at 350 degrees F for about 9 to 10 minutes. Be sure to let them cool completely before adding the buttercream.

For the buttercream, we’re making a half batch of my peanut butter buttercream you see with many of my cakes. It’s so silky and smooth, and full of flavor.

Peanut butter sandwich cookies in a bread pan with cookies next to it.

FAQs

Can these cookies be made ahead of time. Yes! Store the cookies in an airtight container – they’re okay on the counter for a day, otherwise, freeze them to keep them fresh.

What other filling can I use? These peanut butter cookies would also be delicious with a strawberry buttercream, caramel buttercream, or even chocolate buttercream. Alternatively, you could do a little strawberry jam or even chocolate ganache.

A stack of peanut butter sandwich cookies in a bread dish with a towel and whisk next to it.

Peanut Butter Sandwich Cookies

5 from 5 votes
Soft and chewy peanut butter cookies with peanut butter buttercream.
Servings 14 sandwich cookies
Prep Time 15 minutes
Cook Time 10 minutes
Total Time 25 minutes

Ingredients
 
 

For the Cookies

  • 1/2 cup (113 g) unsalted butter, cold and cut into cubes
  • 3/4 cup (187.5 g) creamy peanut butter, I use Skippy
  • 1 1/4 cup (275 g) light brown sugar, packed
  • 3 tablespoons (45 g) milk
  • 1 tablespoon (13 g) pure vanilla extract
  • 1 large egg, cold
  • 1 3/4 cup plus 2 tablespoons cup (225 g) all-purpose flour
  • 1 teaspoon (4 g) baking soda
  • 1 teaspoon (6 g) salt

For the Buttercream

  • 3/4 cup (169.5 g) unsalted butter, slightly cold
  • 1/2 cup (120 g) smooth peanut butter
  • 1/2 teaspoon (2.1 g) vanilla extract
  • 2 1/2 cups (312. 5 g) powdered sugar, measured then sifted
  • 2 tablespoons (28 g) heavy whipping cream
  • pinch of salt

Instructions
 

  • Makes about 14 large cookies.
  • Preheat your oven to 350 degrees F. Line a baking sheet with parchment paper. Set aside.
  • In the bowl of an electric mixer, fitted with the paddle attachment, combine the butter, peanut butter, brown sugar, milk and vanilla. Beat on medium speed until well blended, about one minute. 
  • Add the egg and beat until just combined.
  • Add the flour, baking soda and salt and mix on low speed until just combined. 
  • Roll cookie dough balls, about the size of golf balls. Place 12 on a cookie sheet. Using the back of a fork, press gently into the cookie and then again the opposite direction.
  • Bake for 9 to 10 minutes, or until slightly golden brown on top. Do not over bake. In fact, I like these underdone just a little. Let the cookies cool completely before adding buttercream.
  • You should have 28 cookies to make 14 sandwich cookies.

For the Cookies

  • In the bowl of a stand mixer fitted with the paddle attachment, or a hand mixer, beat the butter and peanut butter until smooth, about 2 minutes.
  • Stir in the vanilla.
  • With the mixer on low speed, slowly add the powdered sugar, followed by the heavy cream. Turn the mixer to medium-high speed and beat the buttercream until smooth.
  • Using a piping bag with a round piping tip, pipe a swirl of buttercream on 14 of the cookies.
  • Place a cookie on top of each cookie with buttercream and press gently to spread the filling a bit.
Author: Courtney Rich
Course: Dessert
Cuisine: Cookies
Keyword: cookies, Peanut Butter

Join the Conversation

  1. Joy Hammond says:

    5 stars
    LOVE LOVE LOVE. Love the peanut butter sandwiches. A huge hit at work! Will be making these…OFTEN!!!!!

    1. Yay! So happy to hear that!

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