Preheat oven to 400°F. Line 2 sheet pans with parchment paper and set aside.
In a small pot over medium heat, bring the water, butter, and salt to a boil.
Remove from heat and add the flour. Mix until fully incorporated.
Place back on heat and continue stirring while cooking until a film forms over the bottom of the pot and the dough stays clumped together.
Remove dough from heat and transfer to a heat-proof mixing bowl. Allow to cool slightly.
Beat the eggs into the cooled dough one by one and continue beating until a thick, paste-like dough forms.
Transfer dough to a piping back and trim the tip of the piping bag.
Pipe the cream puff dough into 2.5-inch diameter mounds about 2 inches apart on the parchment lined sheet pans.
Remove the craquelin from the freezer and cut out 2.5-inch diameter circles from the dough.
Place one craquelin circle on each of the cream puff dough mounds and bake for 10 minutes.
After 10 minutes reduce oven temperature to 375°F without opening the oven and bake for an additional 20-22 minutes or until browned.
Remove from oven and with a sharp knife carefully cut a small hole into the side of the cream puff. Allow to cool completely before filling.