In a saucepan bring water, butter, salt, and cayenne pepper to boil.
Add flour all at once, stirring until a ball forms. Remove from heat.
Add eggs one at a time beating well after each addition until mixture is smooth.
Stir in cheese and Dijon mustard.
Drop by rounded teaspoonfuls on parchment lined baking sheets 2 inches apart.
Bake in a 425º oven for 20 minutes or until golden in color.
