01 - Place grated zucchini into a clean kitchen towel and firmly squeeze to remove as much moisture as possible.
02 - Combine the drained zucchini, sweet corn kernels, sliced green onions, and chopped parsley or chives in a large mixing bowl.
03 - Whisk together the flour, cornmeal, baking powder, salt, and black pepper in a separate bowl.
04 - Add the dry mixture to the bowl of vegetables and gently toss until all pieces are lightly coated.
05 - Mix in the beaten eggs and Parmesan cheese (if using) until a cohesive batter forms; avoid overmixing.
06 - Pour 2 tablespoons of vegetable oil into a large nonstick skillet and heat over medium temperature.
07 - Spoon heaping tablespoons of batter into the skillet, gently flattening each with the back of the spoon.
08 - Cook fritters for 2 to 3 minutes per side until they are golden brown and crisp, working in batches and adding extra oil as necessary.
09 - Transfer cooked fritters to a kitchen paper–lined plate to absorb excess oil. Serve warm accompanied by your preferred dip or sauce.