If you are using ready-made puff pastry, unroll it and separate it from the paper.
1 puff pastry
Roll the dough tightly again to form a log - about 25 cm long.
Cut the dough into 12 slices (mine were about 2 cm wide).
Lightly roll out each slice - to a thickness of about 5 mm.
Grease a muffin baking pan, or individual molds, with butter and line them with dough slices.
How to make custard cream for Pasteis de Nata cookies
In a saucepan, heat 100 ml of water and 100 g of sugar together - simmer for a few minutes.
100 g sugar, 100 ml water
In another saucepan, heat about half of the milk together with cinnamon and a piece of lemon peel.
250 ml milk, 2 pinches cinnamon, 1 piece peel
Mix the flour into the rest of the milk.
30 g wheat flour - all-purpose
Add the milk with flour to the boiling milk in the saucepan - cook until the mixture thickens like pudding.
Remove the pudding from the heat and pour the hot sugar syrup into it in a thin stream - stir with a spoon while doing so.
Strain the pudding mixture through a sieve into a bowl - to get rid of any lumps and lemon peel.
In a second bowl, whisk the egg yolks. Add two tablespoons of the pudding to them and mix.
4 egg yolks
Add the rest of the pudding to the prepared egg yolks and mix thoroughly.
Fill the prepared dough with the cream - about 3/4 of the way up - the cream rises during baking.
Place the cookies in a very hot oven - I baked them for 20 minutes at 270 degrees (top/bottom mode). If your oven does not have such a high temperature, bake them longer, and towards the end, turn on the top broiler to brown the cream.