In a mixing bowl, add the ingredients in the order listed: egg, sugar, ricotta, lemon juice, lemon zest, cornstarch, and baking powder.
Mix well until smooth and creamy.
Heat a nonstick skillet over medium-low heat and lightly grease it with butter or oil, if desired.
Spoon the batter onto the skillet to form pancakes.
Cover with a lid and cook for 3 minutes per side, until golden and puffed.
Dust with powdered sugar and enjoy warm.
