Basic Cheese Puffs

Directions

1. 1
   Preheat the oven to 425 degrees. Place the butter, salt and water in a pan. Bring to a boil.
2. 2
   Sift the flour onto a sheet of waxed paper, then, off the heat, add it all to the butter and water mixture and stir it in very quickly to form a thick paste that leaves the sides of the pan clean.
3. 3
   Return the pan to the heat and beat the mixture with a wooden spoon for 1 minute to dry it. Remove the pan from heat and cool for 5 minutes.
4. 4
   Beat in the eggs and yolk, one at a time, then add the mustard, cayenne pepper and grated cheese. (I didn't have dry mustard so I used 1 teaspoon grainy, brown mustard. I also used a dash more cayenne for an extra bite.).
5. 5
   Place teaspoonfuls of the mixture onto a nonstick baking sheet and bake for 10 minutes. Lower the oven temperature to 350 degrees and cook for 15 minutes, until golden brown. Cool on a wire rack and serve cold.