01 - Whisk together flour, sugar, baking powder, and salt in a large bowl.
02 - In a separate bowl, blend ricotta, egg yolks, milk, melted butter, lemon zest, lemon juice, and vanilla until smooth.
03 - Add wet ingredients to dry ingredients and stir until just combined, avoiding overmixing.
04 - Beat egg whites until soft peaks form, then gently fold them into the batter to maintain lightness.
05 - Heat a nonstick skillet or griddle over medium heat and lightly grease with butter or oil.
06 - Pour approximately 1/4 cup batter per pancake onto the skillet. Cook 2 to 3 minutes until bubbles form and edges set, then flip and cook another 1 to 2 minutes until golden and cooked through.
07 - Transfer cooked pancakes to a plate and keep warm while cooking remaining batter.
08 - Stack pancakes and top with fresh berries, drizzle with maple syrup or honey, and dust with powdered sugar if desired.