1. In a medium saucepan, combine 1 cup of water, 1/2 cup unsalted butter, 1 tablespoon sugar, and 1/4 teaspoon salt. Bring to a boil over medium heat.
2. Reduce heat to low and add 1 cup of flour all at once, stirring vigorously until the mixture forms a ball and pulls away from the sides of the saucepan.
3. Remove from heat and let it cool for 5 minutes. This prevents the eggs from cooking when added.
4. Beat in the eggs, one at a time, ensuring each is fully incorporated before adding the next. Stir in 1 teaspoon of vanilla extract. The dough should be smooth and glossy.
5. Heat about 2 inches of vegetable oil in a deep skillet or pot to 375°F (190°C).
6. Transfer the dough into a piping bag fitted with a star tip. Pipe 6-inch strips of dough into the hot oil, cutting with a knife or scissors.
7. Fry the churros in batches, turning them occasionally until golden brown, about 4-5 minutes per batch.
8. Remove with a slotted spoon and drain on paper towels.
9. Mix 1/2 cup sugar with 1 tablespoon cinnamon in a shallow dish. Roll warm churros in the cinnamon sugar mixture to coat evenly.

Cooking churros can be a fun activity to share with family or friends. Listening to the oil sizzle and watching the churros turn golden is a joy that never fades. Remember, patience is key—give the dough time to rest, and don’t rush the frying process for the best results.