Melt the butter in a saucepan. While stirring, add the flour. Add the milk, mix with a whisk for 3 minutes, then remove from heat.

Away from the heat, add the cheese, the red pepper, the egg yolk. Mix. Spread the mixture about 1 centimeter thick into a mold. Two or three hours later, remove the mixture from the mold. Cut pieces 2 cm. by 2 cm. and roll them into balls. Cover with flour, then bread crumbs. Fry in oil and serve at once.