I used to make these all the time with my roommates. So easy and much better than the storebought oreos...in my humble opinion. :-)
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Homemade Oreos:
2 boxes devil food mix
2/3 cup oil
4 eggs
Mix by hand, drop spoonfuls on to cookie sheet and bake @ 350° for 8 minutes.
Frosting:
4 oz cream cheese
1 Tbsp butter
1 tsp vanilla
2 Cups powdered sugar
Mix together, it will seem really thick but just keep mixing!