Grate the zucchinis and place them in a clean towel. Squeeze out as much liquid as you can — the drier, the crispier.
In a bowl, combine the grated zucchini, chopped onion, eggs, grated cheese, flour, and seasoning.
Mix well until the batter holds together. If it feels too wet, sprinkle in a bit more flour.
Heat oil in a pan over medium heat. Add spoonfuls of the mixture and flatten them slightly.
Fry each side for about 3 to 4 minutes or until golden brown.
Place the finished puffer on paper towels to drain excess oil. Serve warm with sour cream or yogurt dip.