Amazingly rich and fun homemadeoatmeal cream piesmade from homemade cookies and marshmallow fluff filling are an easy and delish dessert!

pan of homemade oatmeal cream pie cookies on parchment.

I was shocked after making these for the first time because they were stunning.I am in love and want to make them every day of the week. Every. Day.I wasn’t sure how the filling would change the cookie as it sat overnight, so I did some playing. I baked my cookies, so some were still really soft and a little underdone, some that were done, and some that were smidgen overdone.As the cookie sits, the icing starts to soften the cookie.

They were even better the second day than the night I made them! That being said, the softest cookies were great, butthose made with a hint of crunch were the best. The overdone ones were significantly resurrected from sitting overnight with the filling but were still a little crunchier than I would prefer.

stack of homemade oatmeal sandwich cookies with white background.

Why You’ll Love Oatmeal Cream Pie

Everyone loves an oatmeal cream pie, am I right? These ones areso sweet, simple, and decadent that I could eat them every week!
Oatmeal cream pies are arich and decadentoatmeal cookie sandwich with a creamy and sweet filling, perfect for an easy dessert any day of the week!
This recipe’s filling consists of butter, vanilla, powdered sugar, and marshmallow cream. It iscreamy, silky, sweet, and just pure heaven.

Recipe Ingredients

Butter
Brown sugar
Egg
Vanilla
Flour–all-purpose
Baking soda and powder
Old-fashioned oats

See the recipe card below for full information on ingredients and quantities.

How to Make Oatmeal Cream Pie

oatmeal cookie batter ingredients in a metal mixer.

oatmeal cookie dough balls before being baked.

Step 1:Beat butter and brown sugar. Add egg, vanilla, and dry ingredients. Add the oats and combine.

Step 2:Roll the dough into 1-inch balls,place on the cookie sheet, and bake.

oatmeal cream pie frosting in a metal mixing bowl.

oatmeal cookies on cooling rack and one has been frosted.

Step 3:For the filling, beat butter and vanilla together. Add powdered sugar and gently fold in the marshmallow cream.

Step 4:Take one cookie, place the filling in the center on the flat bottom, and top with the other cookie.

Recipe FAQs

Are oatmeal cream pies vegetarian?

They are vegetarian! However, the cookies and filling contain butter, so they would not be considered vegan.

Does oatmeal cream pie have gluten?

Yes, there is flour in the cookie dough for oatmeal cream pies.

What are oatmeal cream pies made of?

The cookies in oatmeal cream pies are made of butter, brown sugar, an egg, vanilla, flour, baking powder, baking soda, salt, and old-fashioned oats. These ingredients are pretty basic, but they make perfectly chewy cookies!

woman holding oatmeal cream pie with oatmeal cookies on cooling rack.

Expert Tips

These last for about3 to 4 days stored in an airtight containerin the refrigerator. Rememberthat they continue softening because of the frosting filling over time, so they may get softer and chewier after a couple of days. They’ll last forup to 4 months frozen in an airtight container.
Play with the textures that you prefer best, and have fun making these cuties—and eating them, too!
This marshmallow fluff isso yummy and works great in many other recipes, such asThe Best and Easiest Fruit Dipand thisEasy Chocolate Fudge Recipe.