Place cornflakes into a ziplock bag and seal without any air in the bag. Using a rolling pin crush the cornflakes to a tiny pieces. (imagine coarse meal texture) Place into a bowl.
Place the 8 slices of bread down on a cutting board separately. Place a piece of cheese down on each. Then place 2 ounces of meat on 4 of the pieces of cheese topped bread. Place cheese and bread (with out any ham) on top of the one with the ham.