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Fluffernutter Sandwich Cookies. Two soft & chewy peanut butter cookies sandwiched together with fluffy marshmallow frosting. Pure salty-sweet peanut butter bliss! www.justsotasty.com

Fluffernutter Cookies

These Fluffernutter Cookies have two soft and chewy peanut butter cookies and fluffy marshmallow frosting. You'll love the combination of sweet & salty. 
Course Dessert
Cuisine American
Prep Time 30 minutes
Cook Time 8 minutes
Total Time 1 hour 30 minutes
Servings 24 cookies
Calories 385kcal


For the Peanut Butter Cookies

  • 2 and ¾ cup all-purpose flour , spooned & leveled
  • 1 tablespoon cornstarch
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • 1 cup unsalted butter , softened to room temperature (2 sticks)
  • 1 cup granulated sugar
  • 1 cup brown sugar , lightly packed
  • 1 cup peanut butter , not natural or whipped
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • ¼ cup chopped peanuts , optional

For the Marshmallow Frosting

  • 1 cup unsalted butter , softened
  • 2 cups powdered sugar , sifted
  • 1 7oz jar marshmallow cream
  • 1 tablespoon milk or cream , if needed


Peanut Butter Cookies

  • Preheat the oven to 350F degrees and linebaking sheets with parchment paper or silicone baking mats. 
  • First sift together the flour, cornstarch, baking soda and salt in a large bowl. 
  • Then in a separate large bowl beat together the butter and sugars until fluffy. Beat in the peanut butter, egg and vanilla. 
  • Turn the mixer to low speed and beat in the flour mixture. 
  • Form the dough into balls about 1 tablespoon in size and place at least 2 inches apart on your cookie sheet. Place a few chopped peanuts on the top of each cookie.
  • Bake for 8-10 minutes until the tops look just set. Allow the cookies to cool fully. 

Marshmallow Frosting

  • In a large bowl using an electric mixer, beat the butter until soft. Then turn down the mixer to low speed and carefully mix in the powdered sugar. 
  • Then with the mixer on medium speed beat in the marshmallow cream. If the mixture seems too thick, add in 1 tablespoon milk or cream
  • Frost the bottom of one cookie with the marshmallow frosting then place the second peanut butter cookie on top. 


Calories: 385kcal