In a medium bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
In another medium bowl, whisk together buttermilk and butter. Add eggs and stir until combined.
Add dry ingredients to wet ingredients and whisk until just combined (there were still lumps). Fold in vanilla. Let batter rest for 10 minutes.
Preheat waffle iron and grease. Pour about ⅓-½ cup of batter into the waffle iron (or until batter reached about ½ inch to the edge of the iron). Cook until ready. Top with syrup and berries.
