01 - Preheat heart-shaped waffle iron according to manufacturer instructions.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt until well blended.
03 - In a separate bowl, beat eggs, then whisk in milk, melted butter, and vanilla extract until smooth.
04 - Pour wet ingredients into dry ingredients and stir until just combined. Do not overmix; small lumps are acceptable.
05 - Lightly grease preheated waffle iron with oil or cooking spray.
06 - Pour approximately 1/3 cup batter into center of waffle iron, adjusting based on your iron's capacity.
07 - Close lid and cook for 3 to 5 minutes until waffles are golden brown and crisp.
08 - Carefully remove cooked waffle and repeat with remaining batter until all waffles are prepared.
09 - Serve immediately with fresh berries, whipped cream, maple syrup, or powdered sugar as desired.