Prepare Cinnamon Sugar:
In a small bowl, mix together the granulated sugar, cinnamon, and salt. Set aside.

Make Churro Dough:
In a saucepan over medium heat, combine water, chilled butter, brown sugar, and salt. Stir until butter is melted and the mixture begins to simmer.

Add Flour:
Reduce heat to low, add flour all at once, and stir vigorously with a wooden spoon until a dough ball forms and pulls away from the sides of the pan. Cook and stir for 1–2 more minutes to dry out the dough slightly.

Cool Slightly & Add Eggs:
Remove from heat and let dough cool for 5–7 minutes. Add vanilla, then beat in eggs one at a time until dough is smooth and glossy.

Pipe & Bake or Fry:
Transfer dough to a piping bag fitted with a star tip.

To Bake: Pipe 1.5-inch bites onto a lined baking tray. Bake at 375°F (190°C) for 15–20 minutes until golden. Brush with melted butter while warm and roll in cinnamon sugar.

To Fry: Heat oil to 350°F (175°C). Pipe small bites into the hot oil, cutting with scissors. Fry until golden brown. Drain on paper towels, brush or toss with melted butter, and coat in cinnamon sugar.

Serve Warm:
Enjoy churro bites warm, optionally with chocolate sauce or caramel for dipping!