01 - Preheat your heart-shaped 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, beat the eggs, then whisk in the milk, melted butter, and vanilla extract until smooth.
04 - Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix; a few small lumps are acceptable.
05 - Lightly grease the preheated waffle iron with oil or cooking spray.
06 - Pour about 1/3 cup of batter, or as recommended for your specific waffle iron, into the center of the iron.
07 - Close the lid and cook for 3 to 5 minutes, or until the waffles are golden brown and crisp.
08 - Carefully remove the cooked waffles and repeat with the remaining batter. Serve immediately with fresh berries, whipped cream, maple syrup, or powdered sugar.