Preheat a waffle maker according to manufacturer’s instructions.
In a large mixing bowl, whisk together 2 cups all-purpose flour, 1 tablespoon granulated sugar, 1 tablespoon baking powder, and ¼ teaspoon salt until combined.
Add 1 ¾ cups buttermilk, 2 large eggs, ½ teaspoon vanilla extract, and ½ cup melted butter to the dry ingredients. Whisk until well combined and there are no more lumps.
Add ½ cup of the batter to the preheated waffle maker for a Belgian-style waffle, or add ⅓ cup of the batter for an American-style waffle.
Cook until the waffle is golden brown and crisp, following the manufacturer’s timing guide or approximately 4 to 5 minutes per waffle.
Serve hot, topped with warm syrup, fresh berries, and whipped cream, as desired.
