For the Puff Pastry:
3 tbsp. butter
2 tsp. sugar
1/2 cup water
1/2 cup flour
1 1/2 – 2 eggs
For the Custard Cream Filling:
2 tbsp. flour
1/2 cup sugar
1 cup milk / 2 egg yolks
1 tbsp. melted butter
Optional: matcha green tea powder
For the Topping:
Garnish: powdered sugar
Make the Pastry:
Preheat the oven to 375 degrees F.
Beat eggs in a bowl and set aside.
Put butter, sugar, and water in a pan and bring to a boil over medium heat.
Add flour to the pan and incorporate into the butter mixture, making sure to stir quickly. Turn off the heat and remove pan.
Add the beaten eggs slowly into the pan with the butter and flour dough mixture, stirring well.
Place a piece of foil or a silicone baking sheet on a baking pan.
Take a disposable, recloseable plastic bag and snip the end off one of the corners with scissors. Or, use a pastry bag, if you have one. Put the dough in the plastic bag, and gently squeeze out small mounds of dough onto the pan. Make 8 or 9 mounds of dough.
Bake the puff pastry in the 375 F oven for 30 minutes. Cool the puffs, and then cut them in halves horizontally.
Make the Custard:
Mix the egg yolks and sugar in a pan.
Add sifted flour to the pan and mix well.
Gradually add warm milk.
Place the pan on low heat and stir the mixture constantly until thickened. Stop the heat and add melted butter and stir well.
Cool the custard cream.
If you prefer, try making matcha or green tea flavored custard cream filling.
To make matcha flavored custard cream, dissolve 1 tsp of matcha green tea powder in 2 tsp of water in a small bowl and mix well.
Add a few spoonfuls of the custard cream into the green tea and mix well. Then add the green tea and cream into the rest of custard cream. Mix well until fully incorporated.
Fill the bottom halves of puffs with custard cream and place the top halves on top.
Dust the finished cream puffs with a sprinkle of powdered sugar.