01 -  In a large bowl, whisk together ricotta cheese, milk, lemon zest, lemon juice, and eggs until smooth. 
 02 -  In another bowl, mix together flour, sugar, baking powder, and salt. 
 03 -  Gradually add the dry ingredients to the wet mixture, stirring until just combined. Gently fold in the blueberries. 
 04 -  Heat a non-stick skillet over medium heat and brush with melted butter. 
 05 -  Pour 1/4 cup of batter for each pancake onto the skillet. Cook until bubbles form on the surface, about 2-3 minutes. Flip and cook until golden brown, about 2 more minutes. 
 06 -  Repeat with remaining batter, adding more butter to the skillet as needed.