01 - Whisk together ricotta cheese egg yolks milk lemon zest lemon juice vanilla extract and melted butter in large bowl until smooth.
02 - Sift flour baking powder salt and sugar in separate bowl.
03 - Add dry ingredients to ricotta mixture and gently fold until just combined. Avoid overmixing to preserve texture.
04 - Beat egg whites to stiff peaks in clean bowl. Gently fold into batter in two additions maintaining maximum air volume.
05 - Heat nonstick skillet or griddle over medium-low heat and brush lightly with butter.
06 - Pour 1/4 cup batter per pancake onto skillet. Cook 2 to 3 minutes until small bubbles form and edges appear set. Flip and cook 1 to 2 minutes until golden brown and cooked through.
07 - Repeat with remaining buttering skillet as needed between batches.
08 - Serve warm pancakes topped with fresh berries maple syrup or honey and powdered sugar if desired.