1 Remove the small tip of the salad plant, then in boiling salted water boil for two minutes, then refresh it with ice water and with your hands, press it firmly.
2 Then prepare your Mornay sauce.
In a saucepan, melt 80g (2.8 oz) of butter then add your 50g (1.75 oz) of flour, cook for one minute stirring with a whisk then add your milk while always stirring then salt, pepper, add a little nutmeg and remove from heat, add 60g (2.1 oz) of emmental, and the egg yolk.
3 Preheat your oven to 160°(th 5+).
4 Butter the bottom of your dish, place your cooked salad in it, salt, pepper then leave in the middle of the oven for 7 to 8 minutes (evaporation of remaining water).
5 Pour your Mornay sauce over it, then the remaining emmental and a few small pieces of butter, place in the oven in grill position.
*Cornette d'Anjou is a chicory, scarole with rolled leaves, it is picked from November onwards and its name was given to it because it presents itself in the shape of a cornet.
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