Easy Homemade Oreo Cookies Recipe

Combine the four packages of chocolate cake mix, four eggs, 2/3 cup oil, and 1 teaspoon vanilla in a very large bowl. Mix thoroughly until a stiff dough forms; this can be a lot to handle, so you might find it easier to work in batches.

Prepare the icing by beating the 4 oz cream cheese, 1/2 cup margarine, 2 cups icing sugar, and 1/4 cup milk with electric beaters until smooth and fluffy. If you're feeling adventurous, you can mix in a different flavoring or a touch of food coloring here.

Once the cookies are entirely cool, spread a generous layer of filling onto the flat side of one cookie, then top with another to create a sandwich. Store the finished cookies in the refrigerator or freezer.