Kristina Vanni for Taste of Home Home Recipes Cooking Style Comfort Food

I Made Copycat Costco Marshmallow Crispy Cookies, and They Taste Just Like the Real Thing

Kristina Vanni for Taste of Home

By Kristina Vänni

Taste of Home's Editorial Process

Published on Oct. 15, 2025 Save Saved Saving

Costco's viral marshmallow crispy cookies have been hard to get a hold of, so here's a copycat version you can enjoy any time.

The giant, delightfully indulgent cookies at Costco are legendary. That’s why, when I heard there was a new cookie-meets-Rice Krispies treat hybrid in the baked goods section, I ran to my local store to check it out. They come in a package of 24 large cookies for $9.99. Luckily I found some, because it’s been hard to find the marshmallow cris

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