1. In a pot over medium heat, combine the butter, water, sugar, and salt. Stir until the butter melts and the mixture begins to boil.
2. Reduce the heat to low and add the flour all at once. Stir quickly and continuously until the dough pulls away from the sides of the pot and forms a ball (about 1–2 minutes).
3. Transfer the dough to a mixing bowl and let it cool for 5–10 minutes. Then beat in the eggs one at a time, mixing until the batter is smooth, glossy, and pipeable.
4. Pat the Grimm’s Sizzlin’ Cheddar Smokies dry and insert a skewer into each one.
5. Transfer the choux batter to a piping bag with a star tip.
6. Pipe the batter directly onto each skewered smokie, rotating as you go to coat evenly. Use a spoon to help smooth and seal the ends if needed.
7. Preheat air fryer to 375°F (190°C). Lightly spray the coated smokies with cooking oil and place them in the air fryer basket (work in batches if needed).
8. Air fry for 15 minutes, turning halfway, until golden brown and puffed.
9. Immediately roll in the cinnamon-sugar mixture while still warm. Drizzle with mayo, ketchup, mustard, or any other condiments you like!