I posted a similar question a few years ago, and one person said she had successfully subbed Oreos. She put them in a food processor and "pulverized them", filling and all. I am sure it would also work if you scrape the icing off, and I probably would do that for a cranberry-orange dessert....the cream filling sounds a little sweet to go well with the other flavors.
If you can find chocolate graham crackers, they also work. That is what I ended up using in my recipe.
Less rhetoric, more cowbell!