Homemade Oatmeal + Marshmallow Creme Pies

by Amy on 18 October 2012

y’all, i am so excited to share these cookies with you! as i’ve mentioned before, i’m not the hugest sweets fan – most times, i prefer something savory or salty over a sweet. these homemade oatmeal + marshmallow creme pies, though, brought out a crazy, sweets-lovin’ maniac in me. and everyone i shared them with, now that i think about it. =) they’re incredibly decadent + absolutely wonderful.

the oatmeal cookies themselves are perfect – buttery + soft, with just the slightest hint of crispiness around the edges. they are fantastic just on their own – they’ll be my go-to oatmeal cookie recipe from now on – but they’re even better made into sandwiches with marshmallow buttercream. the marshmallow filling is on the sweeter side, which complements the rich, less-sweet oatmeal cookies in a glorious way. after i made these, i made myself give most of ’em away because i feared i couldn’t resist eating them in massive quantities. that’s how amazing these are – you gotta try ’em!

homemade oatmeal + marshmallow creme pies

makes about 20 cookie sandwiches, adapted from bakingdom


for the cookies:
1 cup unsalted butter, room temperature
1 cup brown sugar
1/2 cup granulated white sugar
2 eggs
1 teaspoon vanilla extract
2 cups all-purpose flour
1 teaspoon cinnamon
1 teaspoon baking soda
1/2 teaspoon salt
3 cups quick-cooking oats

for the marshmallow creme filling:
6 tablespoons unsalted butter, room temperature
1 cup confectioners’ sugar
3/4 teaspoon vanilla
pinch salt
1 1/4 cups marshmallow creme


first, make the cookies:
preheat oven to 350 degrees. line baking sheet with silpat mats or parchment paper.

in a large bowl, or the bowl of a standing mixer, cream the butter for about 30 seconds, then add both sugars + beat until light + fluffy. add the eggs + vanilla, mix well, + scrape down the sides of the bowl as needed.

in a medium bowl, combine the flour, cinnamon, baking soda, + salt. add the flour to the butter mixture in 3 increments until just combined. stir in the oats until evenly distributed.

drop 2 tablespoons of dough (about the size of a golf ball) onto the pan at a time, about 2 inches apart. bake for 10-12 minutes, until golden. allow to cool on the baking sheet for 2 minutes before transferring to a cooling rack. cool completely before filling with the marshmallow creme.

to make the filling:
in a medium bowl, or a stand mixer fitted with the paddle attachment, cream the butter + sugar together until light + fluffy. add in the vanilla + a pinch of salt. mix in the marshmallow creme + beat until light + fluffy. cover bowl with plastic wrap + chill for 30 minutes. if filling appears too soft, add more sugar as needed (amy’s note: 1 cup of confectioner’s sugar worked perfectly for me)

assemble the sandwiches: place 1 – 2 tablespoons of filling on the bottom of a cookie, then place another cookie, bottom side down, on top. continue until all cookie sandwiches are made.

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{ 65 comments… read them below or add one }

51 amy October 20, 2012 at 6:27 pm

bahaha, i totally understand. i OD’d on Hostess Sno-Balls as a teen + i’ve been leery to try one ever since then… =)

52 ashley@BakerbyNature October 21, 2012 at 4:16 pm

I could eat like 16 of these in a row – no lie. Love this.

53 Angela @ AnotherBitePlease October 22, 2012 at 7:46 am

I am totally sweets girl…so I will be making and eating and I hope to share with my kids…maybe. lol

54 sally @ sallys baking addiction October 22, 2012 at 8:06 pm

your go-to oatmeal cookie recipe from now on? that alone makes me want to try them. I am constantly looking for new oatmeal cookie recipes to try – they are my favorite kind of cookie! I am a sucker for creme pies too. they remind me of when I was little!

55 amy October 22, 2012 at 8:10 pm

you’ll have to try this cookie recipe, then – they really are fantastic!

56 Baking Serendipity October 22, 2012 at 8:11 pm

Oatmeal cookies are my favorite in the fall (I dunno), and these sandwich cookies are perfect!

57 Erin @ Dinners, Dishes and Desserts October 22, 2012 at 8:13 pm

Totally a sweets person here :) These look amazing, so much better than the store bought packages version!

58 Blond Duck October 22, 2012 at 9:34 pm

I’ve always wanted to make these, but could never find an icing without shortening. Thank you for realizing my cookie dream.

59 amy October 23, 2012 at 6:58 am

hooray, so glad I could be of help! =)

60 Elizabeth October 23, 2012 at 10:40 am

This marshmallow creme looks so delicious!

61 Kiran @ KiranTarun.com October 24, 2012 at 11:02 am

I’m totally a dessert girl, and this has my name all over it!! Drooling……

62 Rachel @ The Avid Appetite October 24, 2012 at 1:39 pm

these are amazing! i love both salty and sweet things :) i guess that means i eat everything?! i like to have salty things like chips, but also like to end each evening with a sweet dessert.

63 Jennie @themessybakerblog October 26, 2012 at 12:39 pm

Ooooo, yum! These look absolutely delicious. I wish I were more like you, a salty and savory kind of gal, but I just love me some sweets. I can’t wait to make these!

64 Laura Dembowski October 31, 2012 at 10:00 am

I love sandwich cookies! There’s something fabulous about having an excuse to eat two cookies stuffed with frosting :)

65 JulieD October 31, 2012 at 11:46 pm

Amy, these look so perfect!!! I want like three of them!

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