Combine water, 2 ½ tablespoons sugar, salt, and 2 tablespoons vegetable oil in a saucepan. Bring to a boil and remove from heat.

Stir in flour until mixture forms a ball.

Heat oil for frying to 375°F (190°C).

Pipe 5-6 inch strips of dough into hot oil using a pastry bag with a star tip.

Cook churros until golden, then transfer to paper towels to drain.

Combine sugar and cinnamon. Roll drained churros in mixture.