Mix the wet ingredients: In a large bowl, whisk together the ricotta, eggs, milk, lemon zest, lemon juice, vanilla, and sugar until smooth.
Combine the dry ingredients: In another bowl, whisk the flour, baking powder, and salt until combined.
Mix everything together: Add the dry ingredients to the wet and stir gently just until combined. Do not overmix.
Preheat the skillet: Heat a nonstick skillet or griddle over medium-low heat. Add a little butter or oil to coat the surface.
Scoop the batter: Use a 1/4-cup measuring cup to scoop the batter onto the skillet. Spread gently into a circle if needed.
Cook the pancakes: Cook for 2 to 3 minutes, or until bubbles form on the surface and the edges look set.
Flip and finish cooking: Flip the pancake and cook for another 1 to 2 minutes, until golden and cooked through.
Repeat with remaining batter: Add more butter to the pan as needed and continue cooking until all the pancakes are done.
Serve warm: Stack pancakes on a plate and top with maple syrup, powdered sugar, fresh blueberries, or extra lemon zest.