Oatmeal Cream Pies with Marshmallow Filling

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Full Recipe

https://www.kingarthurbaking.com/recipes/oatmeal-cream-pies-with-marshmallow-filling-recipe

Author

Alexander Roberts | 2026-02-04

Description

While oatmeal cream pies are typically filled with a creamy frosting, this version takes the classic sandwich cookie to the next level with a homemade marshmallow filling. Sweet and very vanilla-forward, with the ideal amount of marshmallow bounce, it's the perfect complement to the soft oatmeal cookies. Making marshmallows at home is a project, but the cookies, which start with melted butter, are simple to put together. Plus, you'll be left with a small batch of homemade marshmallows, destined for a delicious cup of hot chocolate.