01 - Preheat your waffle iron according to the manufacturer's instructions.
02 - In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt until well blended.
03 - In a separate bowl, whisk the ricotta, milk, eggs, melted butter, lemon zest, lemon juice, and vanilla extract until smooth and creamy.
04 - Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix; a few small lumps are acceptable.
05 - Lightly grease the preheated waffle iron with nonstick spray or a small amount of melted butter.
06 - Pour approximately 1/2 to 3/4 cup of batter onto the hot waffle iron. Cook until golden brown and crisp, about 3-5 minutes per batch, following your waffle iron's timing guidelines.
07 - Serve immediately while hot, topped with maple syrup, fresh berries, and a dusting of powdered sugar if desired.