Remove one side of the cookies from all of the white and red filled Oreos, so you can get to the fillings.

Remove one cookie off a blue filled Oreo and then add a layer of white and red fillings from the other cookies. Put the cookie back on so you have the red, white, and blue fillings all in one cookie sandwich.

Continue until all of the cookies are filled with all three colors.

Save the extra cookies to use later (for pie crust, in ice cream, trifles, etc).