I came up with this recipe at the Senior Center as a cake that would go a long way. We're always dbl, triple, or quadrupling our desserts so I can't fix this any simpler. It's very sinful and fabulous. I hope ya'll like it if you have a lot of folks to feed!
Preheat oven to 350 degrees. Mix cake mixes per the box directions then mix them all together (or mix them and add up the number of eggs, amount of water and oil needed for 4 mixes). Bake in 4 greased 13 x 9 pans (or 2 greased 12 x 18 pans) till toothpick inserted comes out clean.
In separate bowl, mix all puddings together with 12 cups of milk. Once mixed well and slightly thickened, add crushed oreos to the mix. Stir till blended then place in refrigerator till cake is cool.
Once the cake(s) are cooled, spread pudding mixture over top - be generous with it! Heat one frosting in the microwave for 30 to 40 seconds then divide and pour over each cake. Spread the frosting over the cake. Heat the second can of frosting and repeat, then heat and repeat with the third can of frosting. You can swirl the frosting together to doll up the cake if you like.
Place left overs in the refrigerator - if you have any! Enjoy!