You probably aren't very happy about not being able to eat an Oreo without feeling guilty (or paying palm oil plantation owners to burn down more rainforests), and I found one replacement for them. That's how much palm oil is used, even though you may not realize it. I found some recipes to make your own Oreos, too. The links are below. I also found a petition to change the ingredients of Oreos, with the link below. Please comment on your favorite recipe, or if you can find another store - bought brand that is environmentally friendly.
This is a very helpful website with tips to finding palm oil free products.
http://www.orangutans.com.au/orangutans-survival-information/helping-you-buy-responsibly-palm-oil-free-alternatives.aspx
Some palm oil free products
http://www.palmoilfreeproducts.com.au/
These are the store - bought cookies.
http://www.countrychoiceorganic.com/products/cookies/sandwich-cremes/
This link is from a blog with a ton of other recipes (some of which are other types of homemade Oreos). For those ones, click Recipes at the top and you'll see the list.
http://chocolatecoveredkatie.com/2012/10/24/healthy-oreos/
This is a tricky one. Keep scrolling down until you see the recipe.
http://www.whatrunslori.com/2012/02/homemade-how-to-make-healthy-oreo-cookies/
The petition.
http://www.change.org/en-CA/petitions/oreo-stop-putting-palm-oil-in-your-cookies-unless-you-know-it-does-not-contain-deforestation-animal-extinction#share