01 - Preheat the waffle iron according to the manufacturer's instructions.
02 - In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt.
03 - In a separate bowl, whisk together eggs, milk, melted unsalted butter, and vanilla extract until fully combined.
04 - Pour the wet ingredients into the dry mixture. Gently mix until just combined; it is fine if a few lumps remain.
05 - Carefully fold the diced strawberries into the batter without overmixing.
06 - Lightly brush the preheated waffle iron with melted butter. Pour an appropriate amount of batter onto the iron and spread evenly. Bake for 3 to 5 minutes per batch, or until waffles are golden and crisp.
07 - Serve waffles warm with whipped cream or yogurt, maple syrup or honey, and additional sliced strawberries if desired.