01 - Preheat your waffle iron according to manufacturer's instructions.
02 - In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
03 - In a separate bowl, whisk the ricotta, milk, eggs, melted butter, lemon zest, lemon juice, and vanilla until smooth.
04 - Pour the wet ingredients into the dry ingredients and gently fold until just combined. Do not overmix; a few lumps are fine.
05 - Lightly grease the waffle iron with cooking spray or melted butter. Pour the batter onto the hot iron using about 1/2 cup per waffle, or as recommended for your iron. Cook until golden brown and crisp, about 3 to 5 minutes per waffle.
06 - Serve immediately with your choice of toppings: fresh berries, syrup, powdered sugar, or a sprinkle of extra lemon zest.