Heat your water, butter, salt, vanilla and sugar to a small pot on medium heat. Allow it to melt and mix well.
Stir your pot to make sure that everything is combined. Add your flour to the mixture and stir well with a wooden spoon. It will clump up, which is very normal but you need to make sure you stir mix well until all the clumps are gone and your dough is smooth.
Once your dough is smooth, remove your pot from the heat and add your egg. Mix well until your dough is nice and soft and non-stick.
how to refrigerate the dough
If you can, add your dough to a piping bag and pipe small straws of churro dough onto parchment paper. About 1cmX 8 cm. If you cannot access a piping bag take small portions of the churro dough and rolls it in your hand until you get a thin cylindrical shape.
Refrigerate this dough for about 15 minutes. in the meantime prepare your oil for frying and cinnamon sugar.
How to make the cinnamon sugar
Add the brown sugar and cinnamon into a medium bowl and mix well.
how to fry the churro dough
Add canola or sunflower oil enough for deep frying into a small pot on medium heat. your oil is hot enough when it starts to move in a circular motion.
Take your churro straws ( about 5 at a time) and fry them for 30 seconds to 2 minutes. Or until the churro is golden brown and slightly crispy.
Once your churros have cooked immediately add them to the cinnamon sugar ,and coat them well.
Notes
This recipe is best served warm with melted chocolate or condensed milk.