In a medium saucepan, bring 1 cup of water, 2 tablespoons of sugar, 1/2 teaspoon of salt, and 2 tablespoons of vegetable oil to a boil over medium heat.

Once boiling, quickly stir in 1 cup of all-purpose flour, mixing until a cohesive dough forms, which should take about 2-3 minutes.

Remove the saucepan from heat and allow the dough to cool for about 5 minutes.

Once it's warm but not hot, add in 1 large egg and 1/2 teaspoon of optional vanilla extract.

Mix vigorously using a spoon or spatula until the egg is fully incorporated and the dough is smooth and elastic.

In a large skillet or pot, pour 2 cups of vegetable oil and heat over medium-high heat.

Allow the oil to reach approximately 350°F (175°C); test it with a small piece of dough.

Transfer the prepared churro dough into a piping bag fitted with a star-shaped tip.

Carefully pipe long strips of dough into the hot oil, frying them for about 2-3 minutes per side until golden brown.

Use a slotted spoon to remove them from the oil and place on paper towels to drain excess oil.

While still warm, roll each churro in a mixture of 1/2 cup sugar and 1 teaspoon of ground cinnamon.

Your Delicious Authentic Churros are best served warm, enjoy!