Follow these steps carefully for perfect Mini Churro Bites every time:

1. Prepare the Cinnamon-Sugar Coating: In a shallow dish or pie plate, thoroughly whisk together the 1/2 cup of granulated sugar and 1 1/2 teaspoons of ground cinnamon. Set this aside; you’ll need it as soon as the churro bites come out of the oil.
2. Heat the Oil: In a heavy-bottomed pot, Dutch oven, or deep fryer, pour in the vegetable or canola oil to a depth of at least 1.5-2 inches. Heat the oil over medium-high heat until it reaches a temperature of 375°F (190°C). Use a deep-fry thermometer to monitor the temperature accurately. Maintaining the correct oil temperature is crucial for crispy, non-greasy churros.
3. Start the Dough Base: While the oil is heating, combine the 1 cup of water, 1/2 cup of unsalted butter, 1/4 teaspoon of salt, and 1 tablespoon of granulated sugar in a medium saucepan. Place the saucepan over medium heat. Bring the mixture to a rolling boil, stirring occasionally to ensure the butter is fully melted and the sugar is dissolved.
4. Add the Flour: Once the mixture is at a rolling boil, remove the saucepan from the heat immediately. Add the 1 cup of all-purpose flour all at once. Stir vigorously with a wooden spoon or a sturdy spatula until the flour is completely incorporated and a smooth dough forms. The dough will pull away from the sides of the pan and form a ball. This should take about 30-60 seconds.
5. Cool the Dough Slightly: Continue to stir the dough off the heat for another 1-2 minutes. This helps to cook the flour slightly and release some steam, which is important before adding the eggs. The dough should still be warm, but not scalding hot.
6. Incorporate the Eggs: Transfer the dough to the bowl of a stand mixer fitted with the paddle attachment (or you can do this by hand with a wooden spoon, though it requires more effort). Add the 3 large eggs one at a time, beating well after each addition until fully incorporated. The dough might look separated or curdled at first, but keep mixing, and it will come together into a smooth, glossy, and thick batter. Scrape down the sides of the bowl as needed.
7. Add Vanilla: Once all eggs are incorporated and the dough is smooth, stir in the 1 teaspoon of vanilla extract until just combined. The final dough should be thick enough to hold its shape but soft enough to pipe.
8. Prepare for Piping: Carefully transfer the warm churro dough into a sturdy piping bag fitted with a large star tip (like a Wilton 1M or Ateco #824 or #826). If you don’t have a piping bag, you can use a heavy-duty zip-top bag with a corner snipped off, though you won’t get the classic churro ridges.
9. Fry the Churro Bites: Once the oil has reached 375°F (190°C), carefully pipe the dough directly over the hot oil. As you pipe, use a clean pair of kitchen scissors (you can dip them in a bit of oil or water to prevent sticking) or a small sharp knife to cut off 1-inch to 1.5-inch segments of dough, letting them drop gently into the hot oil.
10. Cook in Batches: Do not overcrowd the pot, as this will lower the oil temperature and result in soggy churros. Fry only about 8-10 mini bites at a time, depending on the size of your pot.
11. Fry Until Golden: Fry the churro bites for about 2-3 minutes per side, or until they are a deep golden brown and crispy. They will puff up as they cook. Use a slotted spoon or spider skimmer to gently turn them occasionally for even cooking.
12. Drain and Coat: Once golden brown and cooked through, use the slotted spoon or spider skimmer to remove the churro bites from the oil, allowing any excess oil to drip back into the pot. Immediately transfer the hot churro bites to the prepared cinnamon-sugar mixture. Toss them gently but thoroughly to ensure they are well-coated on all sides. The heat from the churros helps the cinnamon sugar adhere perfectly.
13. Repeat: Place the coated churro bites on a wire rack to cool slightly while you continue frying the remaining dough in batches. Remember to monitor and adjust the oil temperature between batches, ensuring it returns to 375°F (190°C) before adding more dough.
14. Serve Warm: Mini Churro Bites are best enjoyed warm, fresh from frying. Serve them as they are or with your favorite dipping sauces.