My Cookie Tin: Cookie Crumb Treats

We’re all familiar with Rice Krispie treats. Could I make the same thing with old crumbled cookies?

Last week I ground up all my stale leftover Christmas cookies. Originally I proposed making some sort of dessert ball, with the cookie crumbs mixed with nuts and coconut and rolled in chocolate.

I went a different direction, mixing the cookie crumbs with melted marshmallows (another leftover ingredient) then spreading melted chocolate on top.

I was a little bit concerned how these would taste, but they honestly taste great. The cookie crumbs are delicious; they don’t taste stale. Mixing them with melted marshmallows just makes them chewy. The chocolate is the perfect topper.

I can’t imagine intending to make these and therefore letting a bunch of cookies go stale. This was a perfect way to repurpose old ingredients, however.


  • 3 cups finely ground Christmas cookie crumbs (the wider the variety of cookies, the better)
  • 6 ounces marshmallows
  • 4 tablespoons unsalted butter, divided
  • 1 cup semisweet chocolate chips

Step 1. Melt 2 tablespoons of butter and marshmallows together in a saucepan over medium-high heat. Warm until the marshmallows have melted completely and are a liquid.


Step 2. Pour the marshmallow mixture over the cookie crumbs and stir to combine. This will get very sticky, very fast. Stir initially with a spoon, but you’ll have to switch to your hands. Make sure the marshmallows have cooled sufficiently before using your hands so molten marshmallow goop doesn’t stick to your fingers and burn them (guess if this happened to me).

Step 3. Keep working with the cookie “dough” until the marshmallows have been completely integrated. Kneed the dough and fold it over on itself. After a minute or two of kneeding (as the marshmallows get absorbed by the cookie crumbs) the dough loses its stickiness and becomes very easy to work with.

Step 4. Spread the dough out into a lightly greased 8×8-inch pan.





Step 5. In a small saucepan melt the remaining 2 tablespoons of butter with the chocolate chips, then spread over the cookie dough. Put the cookies in the refrigerator so the chocolate can chill. They are ready to cut when the chocolate has lost its shininess – about 1 hour.

  • randeegf

    most fun idea ever!

  • Lydia

    Very creative!

  • Cat

    Definitely going to try this. Do you think I could grind up banana chips to similar effect, incorporating that into recipe?

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