Oatmeal Sandwich Cookie with Marshmallow Cream Filling

Oatmeal Cookeis with Marhsmallow Cream Filling2
Oatmeal Cookeis with Marhsmallow Cream Filling
Oatmeal Cookeis with Marhsmallow Cream Filling3

Typically when I make oatmeal cookies, I use whole rolled oats and lots of them.  They give a nice hearty texture.  At least, that’s what my friends say.  While I love oatmeal cookies, I always dreamed of them not being so, well, hearty.

It is for this reason why I was in awe of the iced oatmeal cookies I made a while back.  The recipe called for quick cooking oats and I ground them in the food processor.  I can’t believe I never thought of this before.  I loved the texture!  They were still soft, and hearty, but without all of the large oat bits.  Side note: I don’t like pulp in my orange juice if this helps to understand my texture issues with whole oats.

I really wanted to try this process again, but didn’t want to just make oatmeal cookies.  Then I thought of Little Debbie.  Those were the best and sweetest oatmeal sandwich cookies ever.  I decided that I would try to make my own oatmeal cookies with a marshmallow cream filling.

One word.  Success!!  They were great and really reminded me of Little Debbie.  I wish I made my cookies a little thinner, but that didn’t stop my friends and I from eating them all!

Oatmeal Sandwich Cookies with Marshmallow Cream Filling

for the cookies

  • 1 ¼ cups unsalted butter ((2.5 sticks), softened to room temperature)
  • 1 cup dark brown sugar
  • ½ cup granulated sugar
  • 1 large egg
  • 2 teaspoons vanilla extract
  • 1 tablespoon dark molasses
  • 1 ½ cups all-purpose flour
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • ¾ teaspoon ground cinnamon
  • ¼ teaspoon ground cloves
  • 3 cups uncooked quick-cooking oats

for the filling

  • ½ cup (1 stick) unsalted butter, softened
  • 1 (7 1/2 ounce) jar marshmallow fluff or cream
  • 1 cup confectioners' sugar
  • ½ teaspoon vanilla
  • Heavy cream ((as needed))
  • Dash of salt

make the cookies

  1. Place the oats in a food processor or blender and pulse until the oats are ground, but not fine. Set aside.
  2. With a stand or handheld mixer, cream the butter and sugars together at medium speed until light and creamy. Add egg, vanilla, and molasses, scraping down the sides as needed. Set aside.
  3. In a medium-sized bowl, combine the flour, baking soda, salt, cinnamon, and cloves. Whisk it all around. Add the quick oats and combine.
  4. With the mixer running on low, slowly add the dry ingredients to wet ingredients. The dough will be quite thick and you may have to mix it all by hand after a few seconds in the mixer.
  5. Preheat oven to 375°F. Line a large cookie sheet with parchment paper or nonstick baking mat. Drop dough with a large cookie scoop, or make sure each ball of dough is 3 tablespoons in measurement. Cookies will spread in the oven, so drop each ball of dough 2 inches apart. Flatten the tops of the cookie dough slightly.
  6. Bake for 10 minutes, until cookies are lightly golden around the edges. Allow cookies to cool on cookie sheet for 3 minutes before transferring to a wire rack to cool completely.

make the filling

  1. Beat butter in a large bowl with mixer on high speed until creamy. Beat in marshmallow fluff or cream. Reduce speed to low, and beat in confectioners’ sugar and vanilla. Increase speed to high; beat until fluffy. If the filling is too stiff, you can add a little heavy cream.

assemble the cookies

  1. Spread approximately 1-2 tablespoons of filling on the bottom half of the cookie and top with another cookie. Repeat. Enjoy!

Adapted from carlsbad cravings

13 Comments Add yours

  1. Great!! I’m so glad you liked it:)

  2. Curtis J Myrick says:

    Definitely a keeper. Will make again!!

  3. Kara says:

    These look so delicious! pinning for later! 🙂

  4. mznikkilc says:

    OMG! So I’m a huge fan of Little Debbie’s Oatmeal cream pies and these are like those! I never thought of making them myself. I’m going to have to try this! Thanks for sharing!


  5. You had me at Marshmallow….this looks scrumptions! I’m printing this recipe as I type this. Can’t wait to make these this weekend. Keep posting these yummy recipes.

  6. Juliet says:

    They look delicious! I love anything with marshmallows. I might try to make them with gluten free flour instead 🙂
    Thanks for sharing this recipe! I love your blog and your recipes 🙂

    x, Juliet

  7. Hi there! Either is fine, but I prefer to keep them at room temp in a sealable container.

  8. Rachel says:

    When the cookies are made should they be stored in the fridge or can they be stored in a cake carrier? (Lockable lid)

  9. Dave says:

    About to make whoopie pies for a school bake sale…gonna try this filling…wish me luck!

  10. Yes Sophia, I think it can. The filling is basically a frosting and should be kept in the refrigerator. When you are ready, take it out and let it get to room temperature and put it back in the mixer for a few seconds to fluff up the filling again.
    Hope this helps!!

  11. Sophia says:

    can the filling be made ahead of time and stored?

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