In a medium saucepan, bring water, butter, and sugar to a boil over medium heat. Stir until the butter melts completely.

Reduce heat to low and add the flour all at once, stirring vigorously until the mixture pulls away from the sides of the pan and forms a ball.

Remove from heat and let cool for about 5 minutes. Add the eggs one at a time, mixing well until fully incorporated.

If frying, heat about 2 inches of oil in a deep pot. If baking, preheat to 375°F (190°C) and line a baking sheet.

Spoon the dough into a piping bag fitted with a large star tip. Pipe 1 to 2-inch pieces directly into the hot oil or onto the prepared baking sheet.

Fry until golden brown, about 2-3 minutes per side. For baking, place in the air fryer for 8-10 minutes or until golden and crisp.

Remove from oil or air fryer and immediately roll in a mixture of cinnamon and sugar to coat. Serve warm with Nutella.