Cut the top off the onion and peel it. Make deep cuts in a star pattern around the onion, being careful not to cut all the way through.

Soak the onion in cold water for at least 30 minutes to help it bloom.

In a mixing bowl, combine flour, buttermilk, paprika, garlic powder, onion powder, salt, and black pepper to create the batter.

Heat the oil in a deep fryer to 375°F (190°C).

Dip the bloomed onion in the batter, ensuring it is fully coated.

Carefully place the battered onion in the hot oil and fry for about 10-15 minutes until golden brown.

Remove from oil and drain on paper towels.