4: Place the slices of bread in a large dish and sprinkle them with the egg-cream mixture, turn them over to soak each side. Depending on the number of slices, proceed in several times. Preheat your oven to 210°C (410°F)
5: As you do so, place the slices on a baking sheet, possibly protected by a sheet of baking paper.
6: Place in the oven for about 15 minutes to start browning the bread slices.
7: Remove from the oven and top with grated cheese 1 slice on 2...
8: ...then close the croque-monsieur and return to the oven for another 10-15 minutes.
9: Enjoy hot or warm.
Remarks
The cheeses to use are to your taste, not necessarily the trio Comté-Parmesan-Mimolette, do not hesitate to innovate.