01 -
Preheat your oven to 200°C (390°F) and line a baking sheet with parchment paper.
02 -
In a saucepan, heat water and butter over medium heat until butter melts completely. Bring to a gentle boil, then remove from heat. Add flour all at once and stir vigorously with a wooden spoon until a dough forms and pulls away from the sides of the pan, creating a panade.
03 -
Allow the dough to cool slightly, then beat in eggs one at a time, mixing thoroughly after each addition. The final dough should be smooth, shiny, and thick but pipeable.
04 -
Transfer dough to a piping bag or use two spoons to drop small mounds onto the prepared baking sheet, leaving space between each for expansion.
05 -
Bake for 20-25 minutes until golden and well-risen. Keep the oven door closed during the first 15 minutes to prevent collapse. Once baked, transfer to a wire rack to cool completely.
06 -
For the pastry cream, heat milk in a saucepan over medium heat until steaming but not boiling. Remove from heat.
07 -
In a bowl, whisk egg yolks with sugar until pale and creamy. Add cornstarch and mix until smooth.
08 -
Slowly pour hot milk into egg mixture while whisking constantly to prevent curdling. Return mixture to saucepan and cook over medium heat, stirring continuously until cream thickens to pudding consistency.
09 -
Remove from heat, stir in butter and vanilla until fully incorporated. Cool to room temperature, then refrigerate until set.
10 -
Once puffs are completely cooled, slice them horizontally in half or create a small hole in the bottom for filling.
11 -
Using a piping bag, generously fill each puff with the chilled pastry cream.