Fill the top part of the middle plate with batter just like you would with the bottom plate on a regular waffle maker. Then close the top plate and flip the waffle maker using the rotating rod on the appliance so that the other set of plates is facing up. Again, fill the middle plate with batter and close the top plate on it before flipping the waffle irons again. Now both waffle irons on the device should be filled with batter. Let the batter cook in the double waffle maker for four minutes, flipping the irons occasionally. Viola! You’ve got two perfectly cooked waffles!