In a bowl, whisk together flour, baking powder, salt, and sugar.
In another bowl, beat the eggs and then add ricotta, milk, vanilla extract, lemon zest, and lemon juice. Mix until well combined.
Gradually add the wet ingredients to the dry ingredients, and stir until just combined.
Heat a non-stick skillet over medium heat and add a small amount of butter. Pour 1/4 cup of batter for each pancake onto the skillet.
Cook until bubbles form on the surface of the pancakes and the edges appear set, about 2-3 minutes. Flip and cook for another 2 minutes or until golden brown.
Serve warm with maple syrup or fresh berries.
Notes
Adjust the thickness of the batter with a little milk if needed. Add more lemon zest for a tangier flavor.