Add about 5 cups of oil to a heavy-bottomed pot or large dutch oven, you should have about 4 inches of oil. Heat the oil to 350-365 degrees F. Place paper towels onto a large plate. Use a candy thermometer to measure the temperature of the oil!
In a large bowl, combine cornmeal, flour, sugar, baking powder, baking soda, kosher salt, back pepper, garlic powder, onion powder, and cajun seasoning. Whisk together.
In a separate bowl, combine buttermilk, grated yellow onion, and an egg. Whisk together until combined. Add the wet ingredients to the dry ingredients and whisk together, then pour in the melted butter and continue to mix until a smooth batter forms. (Pro tip: Don’t overmix the batter. Stir the wet and dry ingredients together just until combined. Overmixing develops gluten, making them tough.)
Cover with plastic wrap and let the dough rest for 10-15 minutes.
Use a small ice cream scoop or small cookie scoop to scoop out the hush puppy batter and add to the oil. (if you don’t have an ice cream, you can use a spoon to scoop out a heaping tbsp of dough) Fry for 3-4 minutes, until golden brown. Use a slotted spoon to remove from the hot oil and place the hush puppies onto the paper towel-lined plate to remove any excess oil.
Add a sprinkle of salt and garnish with chopped green onion.
Notes
Let the cornmeal hydrate: After mixing, let the batter rest for 5 to 10 minutes so the cornmeal absorbs liquid. This prevents grainy texture.Fry at the right temperature : 350-365°F is the sweet spot. Too hot and they’ll burn before the center cooks; too cool and they’ll absorb oil.Don’t overcrowd the fryer: Frying in small batches keeps the oil temperature steady and ensures even cooking.Drain and season immediately: As soon as they come out, hit them with a light sprinkle of salt so it sticks while they’re hot.Fry in fresh, clean oil for best results: Old oil breaks down, making fried foods heavy and greasy instead of crisp.Serve fresh: Hush puppies are at their best right after frying with that crispy outside, fluffy inside. A little honey butter or remoulade on the side doesn’t hurt either.