First, drain canned corn thoroughly or thaw frozen corn completely. Pat the kernels dry to remove excess moisture. If you're using fresh corn, remove the kernels from the cob.
Next, combine the flour, baking powder, salt, black pepper, and paprika in a mixing bowl. Add the egg and milk, then whisk until smooth. Stir in the corn kernels, green onions, and parsley until evenly distributed.
Place a large skillet over medium heat and add the vegetable oil. Allow the oil to heat before adding the batter. However, avoid overheating it because the fritters may brown too quickly.
Spoon small portions of batter into the skillet. Flatten each portion gently with the back of a spoon. Leave enough space between fritters for easy flipping.
Cook each fritter for approximately 2–3 minutes per side. Flip carefully when the edges look set and the bottoms turn golden brown. Continue cooking until both sides are crisp and the centers are fully cooked.
Transfer the cooked fritters onto a paper towel-lined plate. This helps remove excess oil and preserves their crisp texture. Finally, garnish with fresh parsley and serve immediately with your favorite sauce.