Preheat oven to 400 degrees Fahrenheit.
Grease a baking sheet or use a silicone liner.
Melt butter in a saucepan on the stove. Add water and bring to boiling.
Add flour and salt, stirring vigorously until the mixture comes together into a ball.
Remove from heat and cool about five minutes.
Add eggs one at a time. The dough will get clumpy after each addition, but keep stirring until it is smooth again before adding the next egg.
Once the eggs are incorporated, mix in the grated cheese.
Drop the batter in heaping tablespoons onto the greased baking sheet. (Alternately, you can use a pastry bag to pipe the dough onto the sheet.) If desired, you can sprinkle a little extra cheese on top prior to baking.
Bake for approximately 20 minutes or until golden brown. Makes 20-24 puffs.