Prepare the Dough:

In a medium saucepan over medium heat, combine water, sugar, butter, and salt. Bring to a boil, then remove from heat. Add the flour all at once and stir vigorously until the dough forms a ball.

Cool and Mix:

Let the dough cool for 5 minutes. Add the egg and vanilla extract, mixing until smooth and well combined.

Heat the Oil:

Heat vegetable oil in a deep frying pan or pot to 375°F (190°C).

Shape the Dough:

Use a spoon or piping bag to form small balls of dough (about 1 tablespoon each). Carefully drop them into the hot oil.

Fry the Churro Bombs:

Fry the balls in small batches for about 2–3 minutes, turning occasionally, until golden brown and crisp. Remove with a slotted spoon and drain on paper towels.

Coat in Cinnamon Sugar:

Mix the granulated sugar and cinnamon in a small bowl. Roll the warm churro bombs in the mixture until fully coated.

Serve and Enjoy:

Serve your churro bombs warm with your favorite dipping sauce, such as chocolate, caramel, or Nutella.