Cheese Soufflé

Heat oven to 350°F.
In saucepan, melt butter over medium heat.
Stir in flour and cook until smooth and bubbly, stirring constantly.
Cook for 1 minute, then stir in milk, little by little and bring to a boil stirring constantly.
Boil and stir for 1 minute.
Add salt, pepper, cheese, and remove from heat.
Stir in egg yolks, one by one.
Beat egg whites in a bowl until stiff (do not underbeat).
Carefully fold beaten egg whites into cheese mixture.
Pour into greased soufflé dish (twice the size of the mixture).
Bake for 30 minutes at 350°F.
Serve immediately.