Prepare the bechamel sauce following the basic recipe.

When the bechamel sauce starts to thicken, add the desalted, boned, and finely chopped anchovies.

Mix well until the anchovies are completely dissolved in the bechamel sauce.

If desired, add a walnut-sized piece of butter to enhance the flavor.

Continue stirring until the bechamel sauce with anchovies reaches the desired consistency.

Use the bechamel sauce with anchovies as a condiment for pasta, lasagna, or other dishes as desired.