Combine flour and salt in a bowl.
In a saucepan, bring water, butter, and sugar to a boil.
Pour the boiled mixture into the flour to make dough.
Once the dough cools, add the eggs and mix.
Transfer the dough into a piping bag.
Pipe the dough into hot oil, frying in long shapes.
Remove the golden-brown churros and sprinkle with sugar and cinnamon.