I can't claim this recipe to be my own as I found it on www.yourcupofcake.com/ but I can say they were amazing! my family loved them and they were the best thing I made in ages! this recipe makes 24 cupcakes!
Separate Oreo sandwiches and place one in each cupcake liner cream side up
Mix eggs, oil, buttermilk and sour cream until combined.
Add to cake mix (for easy mixing, sift cake mix)
Fill cupcake liners 2/3-3/4 full over Oreos. Make sure to gently shake the pan side to side to allow the batter to settle. (If not, the cupcakes will have tall peaks from the Oreos at the bottom.)
Bake according to back of cake mix box, usually it will not take the full baking time.
Frosting: Combine cream cheese and butter and whip until light and smooth. Add vanilla and as much powdered sugar as needed for desired taste.
Feel free to play around with the Oreos. You can crumble them up and put them in the batter, put the whole Oreo in the middle of the cupcake, or crush them so they fit through a sifter and add them fold them into the frosting. (If you try to pipe the frosting out and the crumbles are too large, your piping back will clog.)