Combine water, 2 tbsp sugar, salt, and oil in saucepan and bring to boil

Remove from heat and stir in flour until mixture forms a ball

Let cool 5 minutes, then beat in egg and vanilla until smooth

Mix cinnamon with remaining sugar in shallow bowl

Using small spoon or piping bag, form dough into 1-inch balls

Spray air fryer basket and cook churro bites at 375°F for 8-10 minutes until golden

Immediately roll hot churros in cinnamon sugar and serve with chocolate sauce