Here's an inside shot of the rainbow cake from last week:
Yesterday I made a cake with oreo filling, and it is delicious. It was really simple - I just used the same buttercream icing recipe as usual, but mixed in several oreos' worth of crumbs (I crushed them by rolling a glass bottle over a ziploc freezer bag with about 10 oreos in it) and added a couple tablespoons of light corn syrup to thin it out some. I don't have a picture of the inside, but I do have one of the top. I used these new cake stencils (for lack of a better word). I think it turned out pretty well, except my cake was too small, so I wasn't able to fit the exact design I wanted. But it looks nice and it tastes great!