-
1
Prepare béchamel: melt butter in saucepan, whisk in flour, cook 2 minutes; gradually whisk in warm milk; simmer 5 minutes until thick; remove from heat.
-
2
Stir cheese into warm béchamel until melted; season with salt, pepper, and nutmeg.
-
3
Whisk egg yolks one at a time into béchamel, stirring vigorously after each addition.
-
4
In separate bowl, whip egg whites to stiff peaks using electric mixer; fold one-third of whites into béchamel to lighten, then gently fold in remaining whites in two additions.
-
5
Butter and flour a 1-liter soufflé dish; pour mixture to three-quarters full.
-
6
Bake in preheated 190°C oven for 30 minutes until risen 5 cm above rim, top is golden, and center jiggles very slightly when shaken.
-
7
Serve immediately; soufflé will begin to deflate after 2 minutes.