Milk tart (Melk tert Afrikaans) pye de canela o pye de canela

Melktert is call in Afrikaans, in English will be milk tart and Spanish pye de canela 
My husband is from Southafrica and this is one of he's favorite tart, today my 10 years old, wanted to surprise her dad and she made one. 
Melktert seems to have come straight from Dutch Medieval cooking, via the Dutch settlers in the Cape in the 1600s.the Dutch colonize Southafrica until the English went and try to rule the country.

Ingredients for the dough:

1/2 cup of butter

1/2 cup of sugar 

1 egg

2 cup of flour

1 teaspoon of baking powder

5 gr of Salt 

Ingredients for the custard:

4 cups of milk

1 full spoon of butter

1 teaspoon of vanilla

3 tablespoon of flour

2 tablespoon of cornflour

1/2 cup of sugar 

2 beaten eggs

Cinnamon sticks

Cinnamon powder

Dough, in a bowl mix the butter with the sugar until light and creamed, add the egg and beat for 2 minutes, add the flour baking powder, and salt, mixed with a wooden spoon until you get a dough.
Press it down in 9 or 12 inch cake tin, cooked in the oven for 10 to 15 minutes, with the left over pressed in a grease proof paper and cut small round circles or use any cake shape cutters, sprinkle sugar before taking into the oven and cooked until is brown.children love this pastry as a biscuit or mini cakes.

Custard: in a pot pour the milk, butter, vanilla and cinnamon stick, cooked in medium heat, meanwhile in a bowl beat the eggs and mix the flour with the cornflour,the sugar you can use a whisker for this, once the milk is hot not boiling add the last mixture and cooked stirring carefully for 4 minutes once the milk is thick pour in the pastry sprinkle cinnamon powder, leaved to settle.