Chop the bacon and fry in a frying pan until it's to our liking. With the fat of the bacon itself is enough. There is no need to add oil. Reserve.

Spread a baked dish or casserole with a little butter.

Put on the heat and when the butter is melted add the eggs. Wait for them to curdle and salt them. Reserve.

Make a béchamel with butter, flour and milk. You can add pepper and/or nutmeg, to taste. Salt.

Put the béchamel on top of the eggs and the bacon.

Put the grated cheese on the bechamel.

Gratin in the oven until golden brown.