01 - Gently toss mixed berries with sugar and lemon juice in a small bowl. Set aside to macerate while preparing pancakes.
02 - Whisk together flour, sugar, baking powder, baking soda, and salt in a large mixing bowl until well blended.
03 - Combine ricotta cheese, milk, melted butter, egg yolks, lemon zest, and vanilla extract in a separate bowl. Mix until smooth and creamy.
04 - Add ricotta mixture to dry ingredients. Mix gently until just combined, being careful not to overmix.
05 - Beat egg whites in a clean bowl until soft peaks form. Gently fold whipped whites into batter until incorporated.
06 - Heat a nonstick skillet or griddle over medium heat. Lightly grease with butter.
07 - Pour 1/4 cup batter per pancake onto skillet. Cook 2-3 minutes until bubbles appear and edges set. Flip and cook 1-2 minutes until golden and cooked through. Repeat with remaining batter.
08 - Stack pancakes on plates. Top with macerated berries and drizzle with maple syrup or sprinkle with powdered sugar if desired.