Drain the sweet corn thoroughly and place it into a blender or food processor.
Add the egg, flour, salt, and sugar.
Blend until the mixture is mostly smooth while leaving some small corn pieces for texture.
Heat a large skillet or griddle over medium heat.
Add the vegetable oil and allow it to heat.
Spoon about 60 ml of batter onto the skillet for each cachapa.
Gently spread the batter into a round pancake shape.
Cook for 3–4 minutes until the bottom is golden brown.
Carefully flip and cook for another 3–4 minutes until the second side is golden and lightly crisp.
Transfer the cooked pancakes to a plate.
Place several slices of mozzarella cheese in the center of each cachapa.
Fold each pancake in half and allow the residual heat to melt the cheese.
Top with a small pat of butter.
Serve immediately and enjoy this authentic Venezuelan Sweet Corn Cachapas Recipe while warm.